Answer:
d = 1.9 in
Explanation:
Since, the tension force is greater than the shear force. Hence, the area of cross-section shall be limited by the tension:
Tension = Force/Area
Area = Force/Tension
Area = 89 kips/31 ksi
Area = 2.87 in²
but,
Area = πd²/4
2.87 in² = πd²/4
(2.87 in²)(4)/π = d²
d = √(3.65 in²)
d = 1.9 in
A 1-in (internal diameter) pipe is used to supply water to a low-pressure tank with an MAWP of 20 psig. The water is supplied through a regulator from a source with a maximum pressure of 100 psig. Determine the diameter of a conventional spring-operated relief required to protect the vessel from a regulator failure. Be sure to state clearly any assumptions and your justifications for them.
Answer:
3.4 inches
Explanation:
Determine the diameter required to protect the vessel from a regulator failure ( relief diameter )
A = [tex]\frac{\pi d^2}{4}[/tex]
Hence d = [tex]\sqrt{\frac{4A}{\pi } }[/tex] = [tex]\sqrt{\frac{4 * 9.08}{\pi } }[/tex] = 3.4 inches
attached below is the remaining part of the solution
20 points and brainliest is it A, B, C, D
Which of the following OSHA colors would you expect to find around material that is awaiting repair?
A. red
B. blue
C. green
D. yellow
Answer:
I think is B
Explanation:
Consider a simple ideal Rankine cycle with fixed turbine inlet temperature and condenser pressure. What is the effect of increasing the boiler pressure on:_______.
Pump work input: (a) increase (b) decrease (c) remains the same
Turbine work output: (a) increase (b) decrease (c) remains the same
Heat supplied: (a) increase (b) decrease (c) remains the same
Heat rejected: (a) increase (b) decrease (c) remains the same
Cycle efficiency: (a) increase (b) decrease (c) remains the same
Moisture content at turbine exit: (a) increase (b) decrease (c) remains the same
Answer:
increaseincreasedecreasedecreaseincreaseincreaseExplanation:
EFFECT OF INCREASING THE BOLIER PRESSURE ON
pump work output ; IncreaseTurbine work output ; IncreaseHeat supplied ; Decrease and this is because the latent heat been supplied will decrease when there is an increase in pressureHeat Rejected ; Decreasecycle efficiency ; Increase, the increase in the cycle efficiency increases in a very significant amount/rate because cycle efficiency = power output / heat inputMoisture content at Turbine exit ; IncreasesSome refrigerants contain CFCs
A) True
B) false
???????
Answer:
true ...............
Some refrigerants R11, R12, and R115 contain CFC. The statement is true.
What is chlorofluorocarbon?Chlorofluorocarbons (CFCs), as the name suggests, are compounds made of the atoms of fluorine, chlorine, and carbon. Because they are neither hazardous nor combustible, they have a variety of uses, including in refrigeration. Refrigeration is the process of maintaining the temperature of the required space cooler than that of an atmosphere.
As the public learned in 1974 that CFCs were alarmingly destroying the ozone layer, most CFCs were outlawed, and by 1995, their manufacture of them had virtually ended worldwide. CFCs were replaced with other products since they were no longer produced and the things they were used for required new products.
Therefore, some refrigerants R11, R12, and R115 contain CFC. The statement is true.
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A 500-km, 500-kV, 60-Hz, uncompensated three-phase line has a positivesequence series impedance. z = 5 0.03 1 + j 0.35 V/km and a positive sequence shunt admittance y = j4.4*10^26 S/km. Calculate:(a) Zc, (b) (gl), (c) the exact ABCD parameters for this line.
Answer:
A) 282.34 - j 12.08 Ω
B) 0.0266 + j 0.621 / unit
C)
A = 0.812 < 1.09° per unit
B = 164.6 < 85.42°Ω
C = 2.061 * 10^-3 < 90.32° s
D = 0.812 < 1.09° per unit
Explanation:
Given data :
Z ( impedance ) = 0.03 i + j 0.35 Ω/km
positive sequence shunt admittance ( Y ) = j4.4*10^-6 S/km
A) calculate Zc
Zc = [tex]\sqrt{\frac{z}{y} }[/tex] = [tex]\sqrt{\frac{0.03 i + j 0.35}{j4.4*10^-6 } }[/tex]
= [tex]\sqrt{79837.128< 4.899^o}[/tex] = 282.6 < -2.45°
hence Zc = 282.34 - j 12.08 Ω
B) Calculate gl
gl = [tex]\sqrt{zy} * d[/tex]
d = 500
z = 0.03 i + j 0.35
y = j4.4*10^-6 S/km
gl = [tex]\sqrt{0.03 i + j 0.35* j4.4*10^-6} * 500[/tex]
= [tex]\sqrt{1.5456*10^{-6} < 175.1^0} * 500[/tex]
= 0.622 < 87.55 °
gl = 0.0266 + j 0.621 / unit
C) exact ABCD parameters for this line
A = cos h (gl) . per unit = 0.812 < 1.09° per unit ( as calculated )
B = Zc sin h (gl) Ω = 164.6 < 85.42°Ω ( as calculated )
C = 1/Zc sin h (gl) s = 2.061 * 10^-3 < 90.32° s ( as calculated )
D = cos h (gl) . per unit = 0.812 < 1.09° per unit ( as calculated )
where : cos h (gl) = [tex]\frac{e^{gl} + e^{-gl} }{2}[/tex]
sin h (gl) = [tex]\frac{e^{gl}-e^{-gl} }{2}[/tex]
25 points and brainliest is it A, B, C, D
Which option distinguishes the PPE violations in the following scenario that could lead to the most serious injury?
Rey is mixing different liquids for the farm's special pesticide blend. The containers are heavy and awkward to handle. Rey is wearing coveralls, with an apron slung over his shoulder, and safety goggles around his neck; he is wearing leather gloves and tennis shoes. Rey's supervisor walks in and immediately tells him to stop working. Rey is then written up for not following shop safety rules regarding PPE.
A. having an apron over his shoulder
B. having safety goggles around his neck
C. wearing leather gloves instead of nitrile gloves
D. wearing tennis shoes instead of steel-toed boots
Answer:
SIR IT IS D HOPE THIS HELPS (☞ﾟヮﾟ)☞☜(ﾟヮﾟ☜)
Explanation:
An individual eats fish from a river contaminated with benzene. What concentrations of benzene in water (mg/L) would produce a lifetime cancer risk of 10-6 to an individual who eats 2 meals of fish per week for 30 years if the BCF for benzene is 10+3?
This question is incomplete, the complete question is;
An individual eats fish from a river contaminated with benzene. What concentrations of benzene in water (mg/L) would produce a lifetime cancer risk of 10⁻⁶ to an individual who eats 2 meals of fish per week for 30 years if the BCF for benzene is 10⁺³?
Answer:
0.021 mg/L concentration of benzene in water would produce a lifetime cancer risk 10⁻⁶ to an individual who eats 2 meals of fish per week for 30 years if the BCF for benzene is 10⁺³
Explanation:
Chronic daily intake (CDI) =(C/W) (Intake rate/ lifetime) ( Exposure)
values from EPA Exposure Factors Table)
CDI = [ (5.2 L/d × C mg/L 0.054 kg/d) / 70 kg] [30/70] [350/365]
CDI = 1.65 × 10⁻³C
Now concentration of benzene; ( RISK) = CDI × pF
= 10⁻⁶ = [2.9× 10⁻² / (MG/kg-d)] ( 1.65 × 10⁻³C)
C = 0.021 mg/L
Therefore 0.021 mg/L concentration of benzene in water would produce a lifetime cancer risk 10⁻⁶
What is the reading of this Dial Caliper?
Answer:
45
Explanation:
bdgdsfggsfg
What contacts do you use to turn on a load when the coil is energized?
Answer:
Contactors can be field mounted easily and are compact in size. Generally, these electrical devices feature multiple contacts. These contacts are in most cases normally open and provide operating power to the load when the contactor coil is energized. Contactors are most commonly used for controlling electric motors.
Explanation:
A source outputs data at the rate of 1,000,000 bits/sec. The transmitter uses binary PAM with raised cosine pulse shaping. If the ideal baseband channel has a cutoff frequency of 850 kHz, what is the maximum roll-off factor that can be applied to the pulse shaping?
Answer:
maximum roll-off factor is 0.7
Explanation:
given data
rate of output data = 1,000,000 bits/sec
cutoff frequency fc = 850 kHz
solution
we know bandwidth frequency is same as that of bandwidth
we apply here fc formula that is
fc = ω ( 1 + α ) ..........1
here
ω = data rate ÷ 2 .............2
ω = 1000 ÷ 2
ω = 500000 Hz
so put now value in eq 1
fc = ω ( 1 + α )
850000= 500000 ( 1 + α )
solve it we get
α = 0.7
so, maximum roll-off factor is 0.7
A total of 245 kip force is applied to a set of 10 similar bolts. If the spring constant of each bolt is 0.4 Mlb/in and that of members is 1.6 Mlbf/in. What is the net force in every bolt (Fb) if a preload equal to 40 kip was applied to the bolts?
Answer: The net force in every bolt is 44.9 kip
Explanation:
Given that;
External load applied = 245 kip
number of bolts n = 10
External Load shared by each bolt (P_E) = 245/10 = 24.5 kip
spring constant of the bolt Kb = 0.4 Mlb/in
spring constant of members Kc = 1.6 Mlb/in
combined stiffness factor C = Kb / (kb+kc) = 0.4 / ( 0.4 + 1.6) = 0.4 / 2 = 0.2 Mlb/in
Initial pre load Pi = 40 kip
now for Bolts; both pre load Pi and external load P_E are tensile in nature, therefore we add both of them
External Load on each bolt P_Eb = C × PE = 0.2 × 24.5 = 4.9 kip
So Total net Force on each bolt Fb = P_Eb + Pi
Fb = 4.9 kip + 40 kip
Fb = 44.9 kip
Therefore the net force in every bolt is 44.9 kip
"That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government."
Answer: b. social contract
Explanation:
This text in the Declaration of Independence is influenced by John Locke's Social Contract theory which believes that people only enact a government that will keep them safe and secure to allow them pursue their daily lives with liberty.
If the government is unable to do that then the people have the right to overthrow such a government and institute a new one that will act in such a way as to bring them safety and happiness.
Answer:
Social Contract is right but the letter for mine was c whether the letter is different the social contract is correct.
Explanation:
How does the wind affect the wildfire spread?
Answer: it spread by winds has a strong effect on fire behavior due to the fanning effect on the fire.Wind increases the supply of oxygen.
Explanation:
Fires need three things to occur in order to start and grow: oxygen, a spark/heat, and fuel. Wildfires in forests have plenty of fuel and heat is never really an issue, therefore the wind can cause a fire to continue and even spread faster. Wind will not only increase the fire's supply of oxygen, but it will also blow the fire in many different directions, now causing the flames to spread.
What is civil engineering? Use in your own words dont copy off the internet
Answer: Civil engineering is a branch in engineering which deals with design, construction, and building structures such as dam, bridges etc....
Explanation:
What type of brake uses the inside of each rear wheel hub and rotor assembly as a parking brake drum?
Answer:A rear disc/drum parking brake uses the inside of each rear wheel hub and rotor assembly as a parking brake drum
Explanation:
The interior of each rear wheel hub and rotor assembly serves as a parking brake drum in a rear disc/drum parking brake.
What is a brake drum?A drum brake is a type of brake that relies on friction created by a set of shoes or pads pressing outward against a rotating cylinder-shaped part known as a brake drum.
Drum brakes are commonly used to describe brakes in which shoes press against the inner surface of the drum.
Drum brakes provide consistent braking force regardless of whether the vehicle is moving forward or backward.
This is due to the fact that drum brakes produce the same braking force in both directions. This type is typically found on passenger car rear brakes.
Thus, in a rear disc/drum parking brake, the interior of each rear wheel hub and rotor assembly serves as a parking brake drum.
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3. A steel pipe of outside diameter 20 mm and thickness 3 mm is
deflected by 3 mm when used as a beam supported at its ends, 1
m apart, and subjected to a central load of 170 N. Find the
buckling load when the pipe is used as a column with hinged
ends. What is the maximum lateral deflection of this column
before the material attains the yield stress of 250N/mm??
The answer is explained in the picture. Thank you. Rate it
Which personal protective equipment (PPE) should you wear when working around asbestos-containing materials?
A) Respiratory protectionB) Protective work clothing, including gloves C) Face shields and/or vented goggles D) All of the above
Answer:
d
Explanation:
yea
Answer:
D
Explanation:
Calculate the "exact" alkalinity of the water in Problem 3-2 if the pH is 9.43.
Calculate the "approximate" alkalinity (in mg/L as CaCO3 ) of a water containing 120 mg/L of bicarbonate ion and 15 mg/L of carbonate ion.
Answer:
A) approximate alkalinity = 123.361 mg/l
B) exact alkalinity = 124.708 mg/l
Explanation:
Given data :
A) determine approximate alkalinity first
Bicarbonate ion = 120 mg/l
carbonate ion = 15 mg/l
Approximate alkalinity = ( carbonate ion ) * 50/30 + ( bicarbonate ion ) * 50/61
= 15 * (50/30) + 120*( 50/61 ) = 123.361 mg/l as CaCO3
B) calculate the exact alkalinity of the water if the pH = 9.43
pH + pOH = 14
9.43 + pOH = 14. therefore pOH = 14 - 9.43 = 4.57
[OH^- ] = 10^-4.57 = 2.692*10^-5 moles/l
[ OH^- ] = 2.692*10^-5 * 179/mole * 10^3 mg/g = 0.458 mg/l
[ H^+ ] = 10^-9.43 * 1 * 10^3 = 3.7154 * 10^-7 mg/l
therefore the exact alkalinity can be calculated as
= ( approximate alkalinity ) + ( [ OH^- ] * 50/17 ) - ( [ H^+ ] * 50/1 )
= 123.361 + ( 0.458 * 50/17 ) - ( 3.7154 * 10^-7 * 50/1 )
= 124.708 mg/l