Mmax [tex]= (20 × 0.5) + (8 × 1) + (12 × 0.5) - (68.15 × 0.25) - (12 × 0.25)[/tex]
Mmax = 17.93 kN.m (rounded off to two decimal places).
1. Cut the section that allows to solve the loads: To solve the loads, a section is to be cut that involves only three members and a maximum of two external forces.
A general method to cut the section is shown in the diagram below. The selected section is marked with the orange dotted line. Members AB, BD, and CD are within this section, while members AC, CE, and DE are outside it. The external forces on the section are P1 and P2.
Therefore, they are considered in equilibrium with the internal forces in the members AB, BD, and CD.2. Draw the free body diagram: From the above diagram, the free body diagram of the section ABDC is drawn as shown in the below figure.
3. Express the equations of equilibrium: The equilibrium equations of the cut section ABDC are as follows:Vertical Equilibrium:
∑Fv=0=+ABcos(θ)+BDcos(θ)-P1-P2=0
Horizontal Equilibrium:
[tex]∑Fh=0=+ABsin(θ)+BDsin(θ)=0∑Fh=0=ABsin(θ)=-BDsin(θ)or BD=-ABtan(θ)4.[/tex]
Therefore,
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Solve step by step and a solution is provided. Kindly solve
ASAP
Find the lateral and surface area for each pyramid with a regular base. Where necessary, round to the nearest tenth. 7. Solution is 40 cm 25 cm L-900 cm²; S-1592.8 cm²
Given that,The lateral and surface area for a pyramid with a regular base is:L=½P x SL = ½ l × P × SVolume=⅓BHHere, L = 900 cm², S = ?Given solution is 40 cm 25 cm.
P=Perimeter of the base of the pyramidS=Area of the surface area of the pyramidL=Lateral surface areaB=Area of the base of the pyramidH=Height of the pyramid.B = l²The perimeter of the base,
P = 4lHere, the pyramid has a regular base, and we have the dimension of the base of the pyramid;
therefore, we can find the perimeter of the base.P=4l=4(25)=100 cmFind the slant height of the pyramid using the Pythagorean theorem.s² = l² + h²s² = 25² + h²s² - h² = 625s = √625s = 25 cmNow that we have the slant height, we can find the surface area of the pyramid.
S = ½Pl + Bwhere B = l² = 25² = 625 cm²S = ½(100)(25) + 625S = 1250 + 625S = 1875 cm²Thus, the surface area of the pyramid is 1875 cm². And we have already found the lateral surface area.L = ½PlL = ½(100)(25)L = 1250 cm²Thus, the lateral surface area of the pyramid is 1250 cm².
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if a salesperson has gross sales of over $500,000 in a year, then he or she is eligible to play the company's bonus game: A black box contains 2 one-dollar bills, 1 five-dollar bill and 1 twenty-dollar bill. Bills are drawn out of the box one at a time without replacement until a twenty-dollar bill is drawn. Then the game stops. The salesperson's bonus is 1,000 times the value of the bills drawn. Complete parts (A) through (C) below
(A) What is the probability of winning a $22,000 bonus?
(Type a decimal or a fraction. Simplify your answer)
The bonus is 1,000 times the value of the bills drawn. Therefore, the probability of winning a $22,000 bonus is (7/12) × $22,000 = $12,833.33
What is the probability of drawing a twenty-dollar bill on the first or second draw?To calculate the probability of winning a $22,000 bonus, we need to determine the probability of drawing a twenty-dollar bill on the first or second draw.
On the first draw, there are four bills in the box, one of which is a twenty-dollar bill. Therefore, the probability of drawing a twenty-dollar bill on the first draw is 1/4.
If a twenty-dollar bill is not drawn on the first attempt, there will be three bills left in the box, one of which is a twenty-dollar bill. Hence, the probability of drawing a twenty-dollar bill on the second draw is 1/3.
Since the game stops once a twenty-dollar bill is drawn, we can add the probabilities of drawing it on the first or second attempt: 1/4 + 1/3 = 7/12.
.
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For PbCl^2, Ksp = 0.0000127 Determine the molar solubility of PbCl_2.
The given Ksp value of lead chloride (PbCl2) is 0.0000127. We have to determine the molar solubility of PbCl2. Ksp is defined as the solubility product constant of a sparingly soluble salt at a given temperature.
The Ksp expression for PbCl2 is as follows;
PbCl2 ⇔ Pb2+ + 2Cl-Ksp = [Pb2+][Cl-]^2
Let 'x' be the molar solubility of PbCl2. Therefore,[Pb2+] = x M[Cl-] = 2x M
Substituting these values in the Ksp expression, we get;
Ksp = [Pb2+][Cl-]^2
Ksp = (x)(2x)^2
Ksp = 4x^3
From the above expression, we can solve for 'x' as;
x = (Ksp/4)^(1/3)x
= [(0.0000127)/4]^(1/3)x
= 0.0172 M
The molar solubility of PbCl2 is 0.0172 M.
The molar solubility of PbCl2 is 0.0172 M. Ksp is the solubility product constant of a sparingly soluble salt at a given temperature. The Ksp expression for PbCl2 is PbCl2 ⇔ Pb2+ + 2Cl-.
And, the given Ksp value of lead chloride (PbCl2) is 0.0000127.
Finally, the molar solubility of PbCl2 is 0.0172 M.
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A scientist conducts an experiment to determine the rate of NO formation in the reaction: N2(g) + O2(g) 2NO(g) If the initial concentration of N, was 0.500 M and the concentration of N, was 0.450 M after 0.100 s, what is the rate of NO formation?
The rate of NO formation is 0.250 M/s.
Given informationInitial concentration of N2(g), [N2]0 = 0.500 M
Concentration of N2(g) after 0.100 s, [N2] = 0.450 MRxn : N2(g) + O2(g) → 2NO(g)
Rate of formation of NO = -1/2[d(N2)/dt] or -1/1[d(O2)/dt]
Rate of formation of NO = 2 [d(NO)/dt]
Formula for calculating the rate of reaction:
d[X]/dt = (-1/a) (d[A]/dt) = (-1/b) (d[B]/dt) = (1/c) (d[C]/dt)
The rate of reaction is proportional to the concentration of the reactants:
rate = k [A]^x [B]^y [C]^zWhere k = rate constant, x, y, and z are the order of the reaction with respect to A, B, and C. .
The overall order of the reaction is the sum of the individual orders:
order = x + y + z
We are given initial concentration of N2(g) and its concentration after 0.100 s.
We can calculate the rate of formation of NO using the formula given above.
Initial concentration of N2(g), [N2]0 = 0.500 M
Concentration of N2(g) after 0.100 s, [N2] = 0.450 M
Time interval, dt = 0.100 s
Rate of formation of NO = 2 [d(NO)/dt]
Formula for calculating the rate of reaction:
d[X]/dt = (-1/a) (d[A]/dt)
= (-1/b) (d[B]/dt)
= (1/c) (d[C]/dt)
The rate of reaction is proportional to the concentration of the reactants:
rate = k [A]^x [B]^y [C]^zWhere k = rate constant, x, y, and z are the order of the reaction with respect to A, B, and C.
The overall order of the reaction is the sum of the individual orders: order = x + y + z
Now, we will calculate the rate of NO formation by the following steps:
Step 1: Calculate change in the concentration of N2d[N2]/dt = ([N2] - [N2]0)/dt = (0.450 - 0.500)/0.100= -0.500 M/sStep 2: Calculate rate of formation of NO2 [d(NO)]/dt = -1/2[d(N2)]/dt = -1/2 (-0.500) = 0.250 M/s
Therefore, the rate of NO formation is 0.250 M/s.
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i need help hurryyy!!!!
Answer:
c=15.7
Step-by-step explanation:
c=2(pi)(r)
pi=3.14 in this question
r=2.5
c=2(2.14)(2.5)
Answer:
15.70 cm
Step-by-step explanation:
The formula for circumference is [tex]c = 2\pi r[/tex], where r = radius. We are using 3.14 instead of pi here.
The radius is shown to be 2.5 cm, simply plug that into the equation and solve.
To solve, you must first carry out [tex]2.5*2 = 5[/tex].
Then, multiply that product by pi, or, in this case, 3.14: [tex]5*3.14 = 15.7[/tex]
So, the answer exactly is 15.7. When rounded, it's technically 15.70 but that is absolutely no different than the exact answer.
Consider the reaction of 2-bromopropane with methanol [CH_3OH] to form methyl isopropyl ether [(CH_3)_2CHOCH_3]. Which of the following is the correct rate law for the reaction? a)rate =k[methanol] b)rate =k[2-bromopropane][methanol] c)It cannot be determined rate =k [2-bromopropane]
Considering the reaction of 2-bromopropane with methanol [CH₃OH] to form methyl isopropyl ether [(CH₃)₂CHOCH₃], the correct rate law for the reaction is rate = k[2-bromopropane][methanol]. The correct answer is option(b).
To find the rate law, follow these steps:
The rate law for a chemical reaction describes how the rate of the reaction depends on the concentrations of the reactants. To determine the rate law, we need to compare the initial rates of the reaction at different concentrations of the reactants. If the rate of the reaction changes when the concentration of a reactant changes, then that reactant is included in the rate law.So, the correct rate law for the reaction is as follows:Learn more about rate law:
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Given the functions f(x)=sinx and g(x)=3, determine the range of the combined function y=f(x)+g(x). a) {y∈R,−3≤y≤3} b) {y∈R,2≤y≤4} c) {y∈R} d) {y∈R,−1≤y≤1}
The functions f(x) = sin x and g(x) = 3 are given. We need to find the range of the combined function y = f(x) + g(x).The range of the combined function can be determined using the following formula: Range(y) = Range(f(x)) + Range(g(x))
Now, the range of f(x) is [-1,1]. This is because the maximum value of sin x is 1 and the minimum value is -1. The range of g(x) is simply {3}.Using the formula,
Range(y) = Range(f(x)) + Range(g(x))= [-1,1] + {3}= {y ∈ R, -1 ≤ y ≤ 4}
Therefore, the correct option is d) {y ∈ R, -1 ≤ y ≤ 1}. We are given the functions f(x) = sin x and g(x) = 3. We need to find the range of the combined function y = f(x) + g(x).To find the range of the combined function, we first need to find the ranges of the individual functions f(x) and g(x).The range of f(x) is [-1,1]. This is because the maximum value of sin x is 1 and the minimum value is -1. Therefore, the range of f(x) is [-1,1].The range of g(x) is simply {3}. This is because g(x) is a constant function and it takes the value 3 for all values of x. Now, we can use the formula:
Range(y) = Range(f(x)) + Range(g(x))
to find the range of the combined function. Range(y) = [-1,1] + {3}= {y ∈ R, -1 ≤ y ≤ 4}Therefore, the range of the combined function y = f(x) + g(x) is {y ∈ R, -1 ≤ y ≤ 4}.
The range of the combined function y = f(x) + g(x) is {y ∈ R, -1 ≤ y ≤ 4}.
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3. It is expected to generate 3 million TL of income every year for 4 years, and 4 million TL every year for the remaining 6 years, and
Calculate the following by drawing the cash flow diagram for a facility with an initial investment cost of 10 million TL.
a) Net present value (NPV) for i=0.1
b) If the revenues obtained are invested in an investment instrument with an interest rate of 7.5%, at the end of the service life of the firm.
his earnings.
If the revenues obtained from the facility are invested in an investment instrument with an interest rate of 7.5% at the end of the service life, the total earnings will be 41.303 million TL.
To calculate the net present value (NPV) of the facility's cash flows, we need to discount each cash flow to its present value using a discount rate of 10% (i=0.1). The cash flow diagram for the facility is as follows:
Year 1: +3 million TL
Year 2: +3 million TL
Year 3: +3 million TL
Year 4: +3 million TL
Year 5: +4 million TL
Year 6: +4 million TL
Year 7: +4 million TL
Year 8: +4 million TL
Year 9: +4 million TL
Year 10: +4 million TL
To calculate the NPV, we need to discount each cash flow and sum them up. The formula for calculating the present value (PV) of a cash flow is:
PV = CF / (1 + r)^n
Where:
CF = Cash flow
r = Discount rate
n = Number of periods
Using the formula, we can calculate the present value of each cash flow:
Year 1: 3 million TL / (1 + 0.1)^1 = 2.727 million TL
Year 2: 3 million TL / (1 + 0.1)^2 = 2.479 million TL
Year 3: 3 million TL / (1 + 0.1)^3 = 2.254 million TL
Year 4: 3 million TL / (1 + 0.1)^4 = 2.058 million TL
Year 5: 4 million TL / (1 + 0.1)^5 = 2.859 million TL
Year 6: 4 million TL / (1 + 0.1)^6 = 2.599 million TL
Year 7: 4 million TL / (1 + 0.1)^7 = 2.363 million TL
Year 8: 4 million TL / (1 + 0.1)^8 = 2.147 million TL
Year 9: 4 million TL / (1 + 0.1)^9 = 1.951 million TL
Year 10: 4 million TL / (1 + 0.1)^10 = 1.772 million TL
Now, we sum up the present values of all cash flows:
NPV = -10 million TL + 2.727 million TL + 2.479 million TL + 2.254 million TL + 2.058 million TL + 2.859 million TL + 2.599 million TL + 2.363 million TL + 2.147 million TL + 1.951 million TL + 1.772 million TL
NPV = -10 million TL + 23.869 million TL
NPV = 13.869 million TL
Therefore, the net present value (NPV) for a discount rate of 10% (i=0.1) is 13.869 million TL.
b) If the revenues obtained from the facility are invested in an investment instrument with an interest rate of 7.5% at the end of the service life, we can calculate the future value of the cash flows. Since the cash flows occur at the end of each year, we can simply calculate the future value (FV) of each cash flow using the formula:
FV = CF * (1 + r)^n
Where:
CF = Cash flow
r = Interest rate
n = Number of periods
Calculating the future value of each cash flow and summing them up will give us the total earnings:
Year 1: 3 million TL * (
1 + 0.075)^9 = 5.163 million TL
Year 2: 3 million TL * (1 + 0.075)^8 = 4.783 million TL
Year 3: 3 million TL * (1 + 0.075)^7 = 4.428 million TL
Year 4: 3 million TL * (1 + 0.075)^6 = 4.097 million TL
Year 5: 4 million TL * (1 + 0.075)^5 = 4.636 million TL
Year 6: 4 million TL * (1 + 0.075)^4 = 4.271 million TL
Year 7: 4 million TL * (1 + 0.075)^3 = 3.934 million TL
Year 8: 4 million TL * (1 + 0.075)^2 = 3.626 million TL
Year 9: 4 million TL * (1 + 0.075)^1 = 3.345 million TL
Year 10: 4 million TL * (1 + 0.075)^0 = 4 million TL
Now, we sum up the future values of all cash flows:
Total earnings = 5.163 million TL + 4.783 million TL + 4.428 million TL + 4.097 million TL + 4.636 million TL + 4.271 million TL + 3.934 million TL + 3.626 million TL + 3.345 million TL + 4 million TL
Total earnings = 41.303 million TL
Therefore, if the revenues obtained from the facility are invested in an investment instrument with an interest rate of 7.5% at the end of the service life, the total earnings will be 41.303 million TL.
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Sodium chloride has been traditionally used in meat curing processes, where it acts as a preservative and modifies the water holding capacity of the proteins. Consider diffusion of sodium chloride in a large slab of pig tissue with thickness L, with one side maintained at a concentration of sodium chloride of 0.1 g/cm³ and the other side maintained at 0.03 g/cm³. The diffusivity of sodium chloride in the tissue can be approximated as D = (0.3 + 12c) x 106 m²/s, where c is the concentration of sodium chloride in g/cm³. Write the appropriate governing equation for steady-state diffusion of NaCl in the tissue when the diffusivity of NaCl in the tissue is not a constant. Include the boundary conditions. Obtain the concentration profile of sodium chloride in the slab as a function of position x measured from the surface having the higher concentration.
The appropriate governing equation for steady-state diffusion of sodium chloride in the tissue is d²c/dx² = -[1/((0.3 + 12c) x 106)] * dc/dx, with the boundary conditions c(x=0) = 0.1 g/cm³ and c(x=L) = 0.03 g/cm³.
the concentration profile of sodium chloride in the slab as a function of position x measured from the surface having the higher concentration is = -L/12
The equation governing steady-state diffusion of NaCl in pig tissue when the diffusivity of NaCl in the tissue is not constant is given by:
∂J/∂x = 0
J = -D (∂c/∂x)
∂/∂x((0.3 + 12c) (∂c/∂x)) = 0
The concentration of sodium chloride in pig tissue with thickness L and one side maintained at a concentration of sodium chloride of 0.1 g/cm³ and the other side maintained at 0.03 g/cm³ is given by:
d^2c/dx^2 = -12/(0.3+12c) * (dc/dx)
∫[(0.3+12c)/(12c(1-c))] dc = -∫dx
[ln(c) - ln(1-c) - (0.3/12) ln((0.3+12c)/0.3)]|0.03^0.1 = -L
Therefore, the concentration profile of sodium chloride in the slab as a function of position x measured from the surface having the higher concentration is given by:
ln(c/(1-c)) - (0.3/12) ln((0.3+12c)/0.3) = -L/12
Solving the equation, we get the concentration profile of sodium chloride in the slab as a function of position x measured from the surface having the higher concentration.
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In how many ways can the letters of the word ACCOUNTANT be arranged b. A committee of six is to be formed from nine men and three women. In how many ways can members be chosen so as to include i. at least one woman ii. at most one woman
The letters of the word accountant can be arranged in 907,200 different ways. When forming a committee of six from nine men and three women, there are 484 different ways to choose members to include at least one woman, and 165 different ways to choose members to include at most one woman.
To find the number of ways the letters of the word ACCOUNTANT can be arranged, we need to consider that it has 11 letters in total, with 3 repetitions of the letter A, 2 repetitions of the letter N, and 2 repetitions of the letter T. Using the formula for permutations of objects with repetition, the total number of arrangements is given by 11! / (3! * 2! * 2!) = 907,200.
Now, for the committee formation, we have to choose 6 members from a pool of 9 men and 3 women. To calculate the number of ways to choose members that include at least one woman, we can consider two scenarios: selecting exactly one woman and selecting more than one woman.
If we select exactly one woman, we have 3 choices for the woman and 9 choices for the remaining members from the men, resulting in a total of 3 * C(9,5) = 3 * 126 = 378 possibilities.
If we select more than one woman, we have 3 choices for the first woman, 2 choices for the second woman, and 9 choices for the remaining members from the men, resulting in a total of 3 * 2 * C(9,4) = 3 * 2 * 126 = 756 possibilities.
Therefore, the total number of ways to choose members that include at least one woman is 378 + 756 = 1,134.
To calculate the number of ways to choose members that include at most one woman, we can consider two scenarios: selecting no woman and selecting exactly one woman.
If we select no woman, we have 9 choices for all the members from the men, resulting in C(9,6) = 84 possibilities.
If we select exactly one woman, we have 3 choices for the woman and 9 choices for the remaining members from the men, resulting in a total of 3 * C(9,5) = 3 * 126 = 378 possibilities.
Therefore, the total number of ways to choose members that include at most one woman is 84 + 378 = 462.
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If the wave breaks directly onto the wall, but does not overtop, what are the two main forces that you might expect to record at the wall?
The two main forces that you might expect to record at the wall when a wave breaks directly onto it, without overtopping, are hydrostatic pressure and hydrodynamic forces.
Hydrostatic pressure is the force exerted by the static water column above the wall due to the weight of the water. It can be calculated using the equation P = ρgh, where P is the hydrostatic pressure, ρ is the density of water, g is the acceleration due to gravity, and h is the height of the water column. Hydrodynamic forces result from the impact and motion of the breaking wave against the wall. They can be complex and depend on factors such as wave height, wave period, wave angle, and wall characteristics. Detailed calculations often involve the use of numerical models or experimental measurements.
When a wave breaks directly onto a wall without overtopping, the main forces recorded at the wall are hydrostatic pressure due to the weight of the water column and hydrodynamic forces resulting from the impact and motion of the breaking wave.
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Calculate the maximum shear in the third panel of a span of 8 panels at 15ft due to the loads shown in Fig. Q. 4(a).
The maximum shear in the third panel of the 8 panels span is 100 psf.
The shear force in the third panel of the 8 panels span can be calculated using the following steps;
Step 1: Calculate the total uniform load from the left support to the third panel. The load from the left support to the third panel includes the weight of the beam and any uniformly distributed load in the span.
The total uniform load from the left support to the third panel can be calculated as;
{tex}w_1 = w_b + w_u = 15 + 10 = 25 psf{tex}
The total uniform load from the left support to the third panel is 25 psf.
Step 2: Calculate the total uniform load from the third panel to the right support. The load from the third panel to the right support includes only the uniformly distributed load in the span. T
he total uniform load from the third panel to the right support can be calculated as;{tex}w_2 = w_u = 10 psf{tex}
The total uniform load from the third panel to the right support is 10 psf.
Step 3: Calculate the total shear force at the third panel. Due to the symmetrical nature of the span, the maximum shear force will occur at the third panel.
Therefore,
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4.4) How can salinity in soils be taken into account when estimating the seasonal irrigation requirement of a crop
Consider soil salinity when estimating irrigation needs for crops. Highly saline soil requires less water, while non-saline soil may require more water. Prevent over-irrigation and soil salinization by factoring in soil salt concentration.
Soil salinity can be defined as a measure of the salt concentration of a soil. It is expressed in terms of the total amount of soluble salts found in a certain volume of soil solution.
Irrigation is an essential part of modern agriculture. It is required to provide sufficient water to crops for their growth and development. However, the amount of irrigation required can vary depending on the salinity of the soil.
The irrigation water that is applied to the soil causes salt to accumulate in the soil. If the soil salinity is not taken into account when estimating the seasonal irrigation requirement of a crop, there is a risk of over-irrigation, which can lead to increased salinization of the soil. To prevent this, it is important to determine the salt concentration in the soil before irrigation is applied.
To estimate the seasonal irrigation requirement of a crop, it is necessary to determine the water requirements of the crop and the soil characteristics of the field. Soil salinity should be considered as an additional factor in determining the water requirements of the crop. If the soil is highly saline, the crop may require less water to grow than if the soil is not salty. On the other hand, if the soil is not salty, the crop may require more water than if the soil is salty.
In general, irrigation water should be applied at a rate that ensures the soil remains at an optimal moisture level for crop growth and development, while also avoiding over-irrigation that could lead to salt buildup in the soil. The amount of irrigation water needed will depend on a number of factors, including the soil characteristics, the crop type, and the weather conditions.
A thorough understanding of these factors can help farmers optimize their irrigation practices and improve crop yields.
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A large wastewater treatment facility, with an average flow of 220 MGD, has an average influent SO42- concentration of 400 mg/L as SO42-. The wastewater treatment facility has a large-scale biological odor control station at its headworks, with foul air treatment capacity of 180,000 cfm. The average H2S (in gas phase) concentration in the odor control station's inlet air stream is 200 PPMy/v. Please answer the following
The large wastewater treatment facility has an average flow of 220 million gallons per day (MGD). The average influent concentration of sulfate ions (SO42-) in the wastewater is 400 milligrams per liter (mg/L) as SO42-.
The facility has a biological odor control station at its headworks, which can treat foul air. The station has a treatment capacity of 180,000 cubic feet per minute (cfm). The average concentration of hydrogen sulfide (H2S) in the inlet air stream of the odor control station is 200 parts per million by volume (PPMv).
To better understand the question, let's break it down:
1. Average Flow: The wastewater treatment facility processes an average of 220 MGD. This means that, on average, 220 million gallons of wastewater pass through the facility every day.
2. Influent SO42- Concentration: The average concentration of sulfate ions (SO42-) in the influent wastewater is 400 mg/L as SO42-. This indicates the amount of sulfate ions present in each liter of wastewater entering the facility.
3. Foul Air Treatment Capacity: The odor control station at the headworks of the facility has a treatment capacity of 180,000 cfm. This means it can treat and process up to 180,000 cubic feet of foul air per minute.
4. H2S Concentration in Inlet Air Stream: The average concentration of hydrogen sulfide (H2S) in the inlet air stream of the odor control station is 200 PPMv. This indicates the amount of H2S gas present in each million parts of air entering the station.
In summary, the large wastewater treatment facility has an average flow rate of 220 MGD and an influent sulfate ion concentration of 400 mg/L as SO42-. The biological odor control station at the headworks can treat up to 180,000 cfm of foul air, and the average concentration of H2S in the inlet air stream is 200 PPMv.
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Consider the elliptic curve group based on the equation y^2 = x^3 + ax + b mod p where a = 491, b = 1150, and p = 1319. According to Hasse's theorem, what are the minimum and maximum number of elements this group might have?
For the elliptic curve group defined by y^2 = x^3 + ax + b mod p, where a = 491, b = 1150, and p = 1319, Hasse's theorem provides a range for the number of elements in the group.
Hasse's theorem states that for an elliptic curve defined over a prime field, the number of elements in the group (including the point at infinity) falls within the range [p + 1 - 2√p, p + 1 + 2√p].
In this case, the prime field is defined by p = 1319. To calculate the minimum and maximum number of elements, we need to evaluate the bounds [p + 1 - 2√p, p + 1 + 2√p] using the given values.
Substituting p = 1319 into the bounds, we have [1319 + 1 - 2√1319, 1319 + 1 + 2√1319]. Simplifying further, we obtain [1320 - 2√1319, 1320 + 2√1319].
Calculating the approximate values of the bounds, we find that the minimum number of elements is approximately 1168, and the maximum number of elements is approximately 1472.
Therefore, according to Hasse's theorem, the elliptic curve group defined by y^2 = x^3 + ax + b mod p could have a minimum of around 1168 elements and a maximum of around 1472 elements.
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For the elliptic curve group defined by y^2 = x^3 + ax + b mod p, where a = 491, b = 1150, and p = 1319, Hasse's theorem provides a range for the number of elements in the group.
Hasse's theorem states that for an elliptic curve defined over a prime field, the number of elements in the group (including the point at infinity) falls within the range [p + 1 - 2√p, p + 1 + 2√p].
In this case, the prime field is defined by p = 1319. To calculate the minimum and maximum number of elements, we need to evaluate the bounds [p + 1 - 2√p, p + 1 + 2√p] using the given values.
Substituting p = 1319 into the bounds, we have [1319 + 1 - 2√1319, 1319 + 1 + 2√1319]. Simplifying further, we obtain [1320 - 2√1319, 1320 + 2√1319].
Calculating the approximate values of the bounds, we find that the minimum number of elements is approximately 1168, and the maximum number of elements is approximately 1472.
Therefore, according to Hasse's theorem, the elliptic curve group defined by y^2 = x^3 + ax + b mod p could have a minimum of around 1168 elements and a maximum of around 1472 elements.
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A 2-inch-diameter hydraulic pipe circulates a rate of 3 l/s of water at 20 degrees Celsius. Calculate the friction head loss for a length of 250 meters. convert inches to meters.
The friction head loss for a length of 250 meters in a 2-inch-diameter hydraulic pipe circulating a rate of 3 l/s of water at 20 degrees Celsius is approximately 5746.73 meters.
To calculate the friction head loss for the given hydraulic pipe, we need to follow these steps:
Step 1: Convert the diameter of the pipe from inches to meters.
Given that the diameter is 2 inches, we can convert it to meters by multiplying it by the conversion factor of 0.0254 meters/inch. So, the diameter in meters is 2 inches * 0.0254 meters/inch = 0.0508 meters.
Step 2: Calculate the cross-sectional area of the pipe.
The formula to calculate the cross-sectional area of a pipe is A = π * r^2, where r is the radius of the pipe. Since the diameter is given, we can find the radius by dividing the diameter by 2. Thus, the radius is 0.0508 meters / 2 = 0.0254 meters.
Using the formula, the cross-sectional area is A = π * (0.0254 meters)^2 = 0.0020239 square meters.
Step 3: Calculate the velocity of water in the pipe.
The flow rate is given as 3 l/s (liters per second). Since the flow rate is equal to the cross-sectional area multiplied by the velocity, we can rearrange the formula to solve for velocity.
Velocity = Flow rate / Cross-sectional area = 3 l/s / 0.0020239 square meters = 1480.036 m/s (rounded to three decimal places).
Step 4: Calculate the friction head loss.
The Darcy-Weisbach equation is commonly used to calculate the friction head loss in pipes. The equation is:
Head loss = (f * L * V^2) / (D * 2g),
where f is the Darcy friction factor, L is the length of the pipe, V is the velocity of the water, D is the diameter of the pipe, and g is the acceleration due to gravity (approximately 9.81 m/s^2).
Given that the length of the pipe is 250 meters, and the diameter is 0.0508 meters, we can substitute these values into the equation.
The Darcy friction factor depends on the Reynolds number, which can be calculated as:
Re = (V * D) / ν,
where ν is the kinematic viscosity of water at 20 degrees Celsius. The kinematic viscosity of water at 20 degrees Celsius is approximately 1.004 x 10^-6 m^2/s.
Substituting the values into the equation, we have:
Re = (1480.036 m/s * 0.0508 meters) / (1.004 x 10^-6 m^2/s) = 7.471 x 10^7 (rounded to three significant figures).
Now, using the Reynolds number, we can find the Darcy friction factor using a Moody chart or empirical formulas. Since we don't have that information here, let's assume a reasonable value of f = 0.02 (a commonly used approximation for smooth pipes).
Finally, substituting all the values into the friction head loss equation:
Head loss = (0.02 * 250 meters * (1480.036 m/s)^2) / (0.0508 meters * 2 * 9.81 m/s^2) = 5746.73 meters.
Therefore, the friction head loss for a length of 250 meters in a 2-inch-diameter hydraulic pipe circulating a rate of 3 l/s of water at 20 degrees Celsius is approximately 5746.73 meters.
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The solution for x² + 2x + 8 ≤0 is
The empty set
2 or 4
-2 or 4
The solution to the inequality x² + 2x + 8 ≤ 0 is the empty set, which means there are no values of x that satisfy the inequality.
To solve the inequality x² + 2x + 8 ≤ 0, we can use various methods such as factoring, completing the square, or the quadratic formula.
Let's solve it by factoring:
Start with the inequality: x² + 2x + 8 ≤ 0.
Attempt to factor the quadratic expression on the left-hand side. However, in this case, the quadratic does not factor nicely using integers.
Since factoring doesn't work, we can use the quadratic formula to find the roots of the quadratic equation x² + 2x + 8 = 0.
The quadratic formula is given by: x = (-b ± √(b² - 4ac)) / (2a), where a, b, and c are the coefficients of the quadratic equation (ax² + bx + c = 0).
Plugging in the values for our equation, we get: x = (-2 ± √(2² - 418)) / (2*1).
Simplifying further, we have: x = (-2 ± √(-28)) / 2.
Since the discriminant (-28) is negative, there are no real solutions, which means the quadratic equation has no real roots.
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You're having dinner at a restaurant that serves
5
55 kinds of pasta (spaghetti, bow ties, fettuccine, ravioli, and macaroni) in
4
44 different flavors (tomato sauce, cheese sauce, meat sauce, and olive oil).
If you randomly pick your kind of pasta and flavor, what is the probability that you'll end up with bow ties, cheese sauce, or both?
The probability of ending up with bow ties, cheese sauce, or both is approximately 0.18%.
To calculate the probability of ending up with bow ties, cheese sauce, or both, we need to consider the total number of possible outcomes and the number of favorable outcomes.Total number of possible outcomes:
Since there are 555 kinds of pasta and 444 flavors, the total number of possible outcomes is 555 * 444 = 246,420.
Number of favorable outcomes:
The favorable outcomes in this case are selecting either bow ties with any sauce or any pasta with cheese sauce. Since bow ties is just one kind of pasta and cheese sauce is one flavor, the number of favorable outcomes is 1 + 444 = 445.
Probability:
The probability is calculated by dividing the number of favorable outcomes by the total number of possible outcomes:
Probability = Favorable outcomes / Total outcomes = 445 / 246,420 ≈ 0.0018 or 0.18%.
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Answer:2/5
Step-by-step explanation:khannnnnn
Q.3:- A hydropower stationhas a goross head of 10m and head loss in water conducting system is 2 m. Calculate energy generation in year taking discharge 10 m³/sec. (5) (CLO-4)
The energy generation in a year for this hydropower station which has discharge of 10m^3/sec and head of 10 m is 282,240,480,000 Joules.
To calculate the energy generation in a year for a hydropower station with a gross head of 10m and a head loss in the water conducting system of 2m, we need to use the following formula:
Energy generation = Discharge * Gross head * 9.81 * 3600 * 24 * 365
Given that the discharge is 10 m³/sec, the gross head is 10m, and the head loss is 2m, we can substitute these values into the formula:
Energy generation = 10 * (10 - 2) * 9.81 * 3600 * 24 * 365
Simplifying the calculation:
Energy generation = 10 * 8 * 9.81 * 3600 * 24 * 365
Energy generation = 282,240,480,000 J (Joules) per year
So, the energy generation in a year for this hydropower station is 282,240,480,000 Joules.
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Find measure angle of x
Answer:
Angle X = 67.38
Step-by-step explanation:
Cosine Law for Angles (SSS)
cosA = (b^2 + c^2 - a^2) / 2bc
Substitute that into the equation
cosA = (5^2 + 13^2 - 12^2) / 2(5)(13)
A = cos-1 [(5^2 + 13^2 - 12^2) / 2(5)(13)]
A = 67.38°
A branching process (Xn n > 0) has P(Xo 1)= 1. Let the total number of individuals = in the first n generations of the process be Zn, with probability generating function Qn. Prove that, for n > 2, Qn(s) = SP1 (Qn−1(s)),
where P₁ is the probability generating function of the family-size distribution.
To prove that Qn(s) = sP1(Qn-1(s)), we can use the definition of the probability generating function (PGF) and the properties of branching processes.
First, let's define the probability generating function P₁(s) as the PGF of the family-size distribution, which represents the number of offspring produced by each individual in the process.
Next, let's consider Qn(s) as the PGF of the total number of individuals in the first n generations of the process, and Zn as the random variable representing the total number of individuals.
Now, let's derive the expression Qn(s) = sP1(Qn-1(s)) using the properties of branching processes.
Base Case (n = 1):
Q₁(s) represents the PGF of the total number of individuals in the first generation. Since P(X₀ = 1) = 1, we have Q₁(s) = s.
Inductive Step (n > 1):
For the inductive step, we assume that Qn(s) = sP1(Qn-1(s)) holds for some n > 1.
Now, let's consider Qn+1(s), which represents the PGF of the total number of individuals in the first n+1 generations.
By definition, Qn+1(s) is the PGF of the sum of the number of offspring produced by each individual in the nth generation, where each individual follows the same distribution represented by P₁.
We can express this as:
Qn+1(s) = P₁(Qn(s))
Now, substituting Qn(s) = sP1(Qn-1(s)) from the inductive assumption, we have:
Qn+1(s) = P₁(sP1(Qn-1(s)))
Simplifying, we get:
Qn+1(s) = sP1(Qn-1(s)) = sP1(Qn(s))
This completes the inductive step.
By induction, we have shown that for n > 2, Qn(s) = sP1(Qn-1(s)).
Therefore, we have proved that for n > 2, Qn(s) = sP1(Qn-1(s)).
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Indicate whether energy is emitted or absorbed when the following electronic transitions occur in hydrogen: (a) from n=2 to n=6,
(b) from an orbit of radius 4.76 A˚ to one of radius 0.529 A˚
(c) from the n=6 to the n=9 state.
(a) Transition from n=2 to n=6: Energy is absorbed.
(b) Transition from radius 4.76 Å to radius 0.529 Å: Energy is emitted.
(c) Transition from n=6 to n=9: Energy is emitted.
(a) When an electron transitions from n=2 to n=6 in hydrogen, energy is absorbed. This is because electrons in higher energy levels have greater energy, and when they move to a higher level, they need to absorb energy.
(b) When an electron transitions from an orbit of radius 4.76 Å to one of radius 0.529 Å, energy is emitted. This is because electrons in smaller orbits have lower energy, and when they move to a lower energy level, they release excess energy in the form of electromagnetic radiation.
(c) When an electron transitions from the n=6 to the n=9 state in hydrogen, energy is emitted. Similar to the previous case, electrons moving to lower energy levels release excess energy, resulting in the emission of energy.
In summary:
(a) Energy is absorbed.
(b) Energy is emitted.
(c) Energy is emitted.
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Solve the equation for the variable.
15. 25 – 3. 8x = -26. 75 +2. 2x
x = [?]
The solution to the equation is x ≈ 1.847.To solve the equation 25 - 3(8x) = -26.75 + 2(2x) for the variable x, we need to simplify and isolate x on one side of the equation.
Let's break it down step-by-step:
1. Distribute the multiplication:
25 - 24x = -26.75 + 4x
2. Combine like terms on both sides of the equation:
-24x - 4x = -26.75 - 25
-28x = -51.75
3. Divide both sides of the equation by -28 to solve for x:
x = -51.75 / -28
4. Simplify the division:
x ≈ 1.847
Therefore, the solution to the equation is x ≈ 1.847.
It's important to note that this answer is rounded to three decimal places. You can double-check the solution by substituting x = 1.847 back into the original equation to see if it satisfies the equation.
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Convert 8,400 ug/m3 NO to ppm at 1.2 atm and 135°C.
show all working.
We are supposed to convert 8,400 ug/m³ NO to ppm at 1.2 atm and 135°C.1. First, we need to convert the given concentration in ug/m³ to mol/m³ using the molecular weight of NO. Molecular weight of NO = 14 + 16
Given:ug/m³ NO = 8,400
Pressure P = 1.2 atm
Temperature T = 135°C = 408.15 K
= 30 g/molWe need to convert ug to g.1 μg
= 10⁻⁶ g8400 μg/m³
= 8.4 × 10⁻³ g/m³NO concentration
= (8.4 × 10⁻³ g/m³) / 30 g/mo
l= 2.8 × 10⁻⁴ mol/m³2.
Substituting the given values,P = 1.2 atmT
= 408.15 K n
= 1 mole (since we want the volume of 1 mole of gas)R
= 0.082 L atm / (mol K)V = (1 × 0.082 × 408.15) / 1.2= 28.09 L/mol3.
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Convert 8,400 ug/m3 NO to ppm at 1.2 atm and 135°C. we get 28.09 L/mol3.
We are supposed to convert 8,400 ug/m³ NO to ppm at 1.2 atm and 135°C.1. First, we need to convert the given concentration in ug/m³ to mol/m³ using the molecular weight of NO. Molecular weight of NO = 14 + 16
Given:ug/m³ NO = 8,400
Pressure P = 1.2 atm
Temperature T = 135°C = 408.15 K
= 30 g/mol
We need to convert ug to g.1 μg
= 10⁻⁶ g8400 μg/m³
= 8.4 × 10⁻³ g/m³
NO concentration
= (8.4 × 10⁻³ g/m³) / 30 g/mo
l= 2.8 × 10⁻⁴ mol/m³2.
Substituting the given values,P = 1.2 atmT
= 408.15 K n
= 1 mole (since we want the volume of 1 mole of gas)R
= 0.082 L atm / (mol K)V
= (1 × 0.082 × 408.15) / 1.2
= 28.09 L/mol3.
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Graph theory help
In the star trek universe, the Vulcan game of logic kal-toh has the goal to create a holographic icosidodecahedron. An icosidodecahedron is a polyhedron whose every vertex is incident to two(opposite) triangular faces and two pentagonal(opposite) faces. find the number of faces in this polyhedron please show work
Kal-toh is a Vulcan logic game aiming to create a holographic icosidodecahedron. The polyhedron has p pentagonal faces and q triangular faces, with p vertices and q vertices. The number of faces is 20. The formula for calculating edges is V - E + F = 2.
Kal-toh is a Vulcan game of logic whose objective is to create a holographic icosidodecahedron. A polyhedron is a three-dimensional shape made up of a set of flat surfaces that are connected. The icosidodecahedron is a polyhedron whose every vertex is incident to two (opposite) triangular faces and two pentagonal (opposite) faces.
To calculate the number of faces in this polyhedron, let us first consider that it has p pentagonal faces and q triangular faces.
Every pentagonal face includes 5 vertices, and each vertex is counted twice because it is shared with an adjacent pentagonal face. Similarly, each triangular face includes 3 vertices that are shared by two other triangular faces, which means that every triangular face includes 1.5 vertices.
Thus, the number of vertices in the icosidodecahedron is given by:
p(5/2) + q(3/2)
= 30p + q
= (60 - 3q)/5
And the number of edges can be calculated by the formula: 2E = 5p + 3q
Then we can apply Euler's formula: V - E + F = 2, which gives the following:
V = 30,
E = (5p + 3q) / 2,
and F = (60 - 2p - 3q) / 2.
So, substituting these values in the formula, we get:
30 - (5p + 3q) / 2 + (60 - 2p - 3q) / 2 = 2
Simplifying, we get:p + q = 20Therefore, the number of faces in the icosidodecahedron is 20.
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a) A student took CoCl_3 and added ammonia solution and obtained four differently coloured complexes; green (A), violel (B), yellow (C) and purple (D). The reaction of A,B,C and D with excess AgNO_3 gave 1,1,3 and 2 moles of AgCl respectively. Given that all of them are octahedral complexes, ilustrate the structures of A,B,C and D according to Werner's Theory.
The structures of complexes A, B, C, and D in Werner's theory are octahedral, with different arrangements of ammonia and chloride ligands around the central cobalt ion.
When a student added ammonia solution to CoCl3, four differently colored complexes were obtained: green (A), violet (B), yellow (C), and purple (D).
Upon reaction with excess AgNO3, the complexes A, B, C, and D produced 1, 1, 3, and 2 moles of AgCl, respectively.
All these complexes are octahedral in shape.
Using Werner's Theory, we can illustrate the structures of complexes A, B, C, and D.
Explanation:
According to Werner's Theory, metal complexes can have coordination numbers of 2, 4, 6, or more, and they adopt specific geometric shapes based on their coordination number. For octahedral complexes, the metal ion is surrounded by six ligands arranged at the vertices of an octahedron.
To illustrate the structures of complexes A, B, C, and D, we need to show how the ligands (ammonia molecules in this case) coordinate with the central cobalt ion (Co3+). Each complex will have six ligands surrounding the cobalt ion in an octahedral arrangement.
- Complex A (green) will have one mole of AgCl formed, indicating it is a monochloro complex. The structure of A will have five ammonia (NH3) ligands and one chloride (Cl-) ligand.
- Complex B (violet) also gives one mole of AgCl, suggesting it is also a monochloro complex. Similar to A, the structure of B will have five NH3 ligands and one Cl- ligand.
- Complex C (yellow) gives three moles of AgCl, indicating it is a trichloro complex. The structure of C will have three Cl- ligands and three NH3 ligands.
- Complex D (purple) produces two moles of AgCl, suggesting it is a dichloro complex. The structure of D will have two Cl- ligands and four NH3 ligands.
Overall, the structures of complexes A, B, C, and D in Werner's theory are octahedral, with different arrangements of ammonia and chloride ligands around the central cobalt ion.
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8. A system of equations consists of two lines. One line passes through (9, 3) and (3, 1.5) and the second line passes through (0, 2) and (–8, 0). How many solutions does the system have?
The system of equations has a unique solution at (6.5, 3).
To determine the number of solutions for the given system of equations, we need to analyze the slopes and y-intercepts of the two lines. The equation of a line can be expressed in the form y = mx + b, where m is the slope and b is the y-intercept.
For the first line passing through (9, 3) and (3, 1.5), we can calculate the slope as follows:
m1 = (1.5 - 3) / (3 - 9) = -0.25
Using the slope-intercept form, we can find the equation for the first line:
y = -0.25x + b1
By substituting one of the given points (e.g., (9, 3)), we can solve for b1:
3 = -0.25(9) + b1
b1 = 5.25
Thus, the equation for the first line is y = -0.25x + 5.25.
For the second line passing through (0, 2) and (-8, 0), we can calculate the slope:
m2 = (0 - 2) / (-8 - 0) = 0.25
Using the slope-intercept form, we can find the equation for the second line:
y = 0.25x + b2
By substituting one of the given points (e.g., (0, 2)), we can solve for b2:
2 = 0.25(0) + b2
b2 = 2
Thus, the equation for the second line is y = 0.25x + 2.
Now, we have two equations:
y = -0.25x + 5.25
y = 0.25x + 2
To find the solutions, we set the two equations equal to each other:
-0.25x + 5.25 = 0.25x + 2
By solving for x, we get:
0.5x = 3.25
x = 6.5
Substituting this value back into one of the equations, we can find y:
y = 0.25(6.5) + 2
y = 3
In summary, the system has one solution.
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Select all statements that are true tate and odor causing compounds are covered by secondary standards. Wand one must be followed by chlorination so that residual disinfectant is maintained in the distribution system OMOLG can be per than MCL Stokes Law can be used to calculate setting velocity of flocs 4 pts
The statements that are true are as follows:
1. Taste and odor causing compounds are covered by secondary standards.
Secondary standards are guidelines set by the Environmental Protection Agency (EPA) to regulate contaminants in drinking water that are not considered harmful to health but can affect the taste, odor, or appearance of the water. These secondary standards include limits for taste and odor causing compounds.
2. Chlorination is necessary to maintain residual disinfectant in the distribution system.
Chlorination is a common method used to disinfect drinking water by adding chlorine or chlorine compounds. The purpose of chlorination is to kill or inactivate harmful microorganisms that may be present in the water. By maintaining a residual disinfectant, any pathogens that may enter the distribution system after treatment can be effectively neutralized.
3. Stoke's Law can be used to calculate the settling velocity of flocs.
Stoke's Law is a formula used to estimate the settling velocity of particles in a liquid. In the context of water treatment, flocs are formed by adding coagulants to remove suspended particles. The settling velocity of flocs is important to ensure effective sedimentation and separation of particles during the treatment process.
The statements that are not true are:
1. OMOLG cannot be greater than MCL.
The Maximum Contaminant Level (MCL) is the highest allowable concentration of a contaminant in drinking water, set by the EPA to protect public health. It is important to ensure that the concentration of contaminants in drinking water is below the MCL. Therefore, OMOLG (Operational Minimum Level Goal) should not exceed the MCL.
In summary, the true statements are that taste and odor causing compounds are covered by secondary standards, chlorination is necessary to maintain residual disinfectant, and Stoke's Law can be used to calculate the settling velocity of flocs. The false statement is that OMOLG cannot be greater than MCL.
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What is the slope of the line
Answer: The slope of the line is [tex]\frac{1}{5}[/tex].
Step-by-step explanation:
To find the slope, m, of the line, we first find out two points in this line.
Find all the three roots of the equation x³ - 3 cos(x) +2.8 = 0 using bracket method (bisection method, or false-position method).
The solution for this question is:
Roots of the equation are x ≈ 0.554, x ≈ -1.72, x ≈ 1.98.
The equation, x³ - 3 cos(x) +2.8 = 0, needs to be solved using bracket method, which involves the bisection method or the false-position method to find the roots of the equation. Here's how to do it:
Using the bisection method, the equation becomes:
Let f(x) = x³ - 3 cos(x) + 2.8 be defined on [0,1].
Then f(0) = 3.8f(1) = 0.8
Since f(0) * f(1) < 0, the equation has a root on [0,1].
Therefore, applying the bisection method, we obtain:
x₀ = 0
x₁ = 1/2
f(x₀) = 3.8
f(x₁) = 1.175
x₂ = (0 + 1/2)/2 = 1/4
f(x₂) = 2.609
x₃ = (1/4 + 1/2)/2 = 3/8
f(x₃) = 1.989
x₄ = (3/8 + 1/2)/2 = 7/16
f(x₄) = 1.417
x₅ = (7/16 + 1/2)/2 = 25/64
f(x₅) = 0.529
x₆ = (25/64 + 1/2)/2 = 157/512
f(x₆) = 0.133
x₇ = (157/512 + 1/2)/2 = 819/2048
f(x₇) = -1.275
x₈ = (157/512 + 819/2048)/2 = 1063/4096
f(x₈) = -0.656
x₉ = (819/2048 + 1/2)/2 = 3581/8192
f(x₉) = 0.492
x₁₀ = (3581/8192 + 1/2)/2 = 18141/32768
f(x₁₀) = -0.081
The approximation x₁₀ = 18141/32768 is the root of the equation with an error of less than 0.0001.
Hence the first root of the equation is x ≈ 0.554.
The same can be done with the interval [-1,0] and [1,2] to find the other two roots.
Thus, the solution for this question is:
Roots of the equation are x ≈ 0.554, x ≈ -1.72, x ≈ 1.98.
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