The intensity of radiation at a distance x meters from a source is modeled by the function given by R(x)=kx2, where kk is a positive constant. Which of the following gives the average intensity of radiation between 10 meters and 50 meters from the source?

Answers

Answer 1

This would be the average value of R(x) between 10 m and 50 m :

[tex]\displaystyle \frac1{50\,\mathrm m - 10\,\mathrm m} \int_{10\,\rm m}^{50\,\rm m} kx^2 \, dx[/tex]

Answer 2

The average intensity of radiation between 10 meters and 50 meters from the source is 1033.33 k.

What is integration?

It is the reverse of differentiation.

The intensity of radiation at a distance x meters from a source is modeled by the function given by

R(x)=kx²

where k is a positive constant.

The average intensity of radiation between 10 meters and 50 meters from the source will be

[tex]\rm Average \ intensity = \dfrac{1}{50 - 10} \int_{10}^{50} \ kx^2 \ dx\\\\\\Average \ intensity = \dfrac{k}{50 - 10} [ \dfrac{x^3}{3} ]_{10}^{50}\\\\\\Average \ intensity = \dfrac{k}{40} [ \dfrac{50^3}{3} - \dfrac{10^3}{3} ]\\\\\\Average \ intensity =1033.33k[/tex]

More about the integration link is given below.

https://brainly.com/question/18651211


Related Questions

Which best defines a compare and contrast text structure? Compare and contrast texts demonstrate the similarities and differences between two or more topics. Compare and contrast texts explain why things happen in terms of reasons and results. Compare and contrast texts outline a process or series of events in a time order from beginning to end. Compare and contrast texts outline different steps of a procedure in an ordered sequence.

Answers

Answer:

A) Compare and contrast texts demonstrate the similarities and differences between two or more topics

Step-by-step explanation:

Compare and Contrast is a text structure (or pattern of organization) where the similarities and differences of two or more things is discussed/explored.

M/4 - 2=6 evaluate expression

Answers

Answer: M = 32

Step-by-step explanation:

We can add 2 to each side of the equation to get M/4 = 8.

We can then multiply each side of the equation by 4 to get M = 32.

The tallest ferris wheel in the world has 60 arms.
Each arm seats 8 people.

How many people does the ferris wheel seat in total?

Please help it's timed

Answers

Answer:

480 is the correct answer

Use the graph to answer the questions

Answers

( -30,35 ) is the answer

In hockey, a player gets credited with a “point” in their statistics when they get an assist or goal. The table shows the number of assists and number of points for 15 hockey players after a season.

assists points
22 28
16 18
46 72
19 29
13 26
9 13
16 22
8 18
12 13
12 17
37 50
7 12
17 34
27 58
18 34
Make a scatter plot of this data. Make sure to scale and label the axes.

Answers

The data for the assist forms the possible x-values, while the data for the

points represent the y-values of the scatter plot.

Response:

Please find attached the required scatter plot created with MS Excel

How is the scatter plot of the data created?

The given table is presented as follows;

[tex]\begin{tabular}{|c|c|c}Assist&Points\\22&28\\16&18\\46&72\\19&29\\13&26\\9&13\\16&22\\8&18\\12&13\\12&17\\37&50\\7&12\\17&34\\27&58\\18&34\end{array}\right][/tex]

A scatter plot of the above data can be created using MS Excel, by

entering the values into cells as presented above, selecting all values,

and selecting Insert then Scatter from the Chart sub-menu.

The scatter plot of the data is attached

Learn more about scatter plots here:

https://brainly.com/question/3083461

HELP ME PLEASE!!!!!!!! HELP ME PLEASE!!!!!!!! HELP ME PLEASE!!!!!!!! HELP ME PLEASE!!!!!!!! HELP ME PLEASE!!!!!!!! HELP ME PLEASE!!!!!!!! HELP ME PLEASE!!!!!!!! HELP ME PLEASE!!!!!!!! HELP ME PLEASE!!!!!!!! Prove: An even plus an odd equals an odd. (2n)+(2m+1)=

Answers

Answer:

Step-by-step explanation:

We can factor out 2 to give us 2(2mn+n)

Answer:

the even number is two

Step-by-step explanation:

the box with the question mark has the two while the one without a question mark is one which is an odd number. when 2 multiplies 1, it gives 2

A) 1/5 + 3/10

B) 7/8 - 1/4

Work out then simplify

Answers

Answer:

please follow me and take thanks

Pierre’s unicycle wheel had a diameter of 80cm.

a) how far does the unicycle move if the wheel turns once?
Give your answer in metres, correct to 2 decimal places.

Answers

251.20 50 I think is the answer maybe not but at least try

Simplify −8.5(0.3+0.4)÷(−5)+0.31.

Answers

Answer:

1.5

Step-by-step explanation:

If u get this wrong I have to give u a kiss what is 1+1=?

Answers

Answer is 2, basic math

Answer:

2

LOL - I need the kiss tho!

Hope this helps!

It cost Jaden $4.80 to send 96 text messages how much would it cost to send 155 messages

Answers

Answer:

7.75

Step-by-step explanation:

found unit rate divided 4.80 by 96 = 0.05

0.05 x 155 = 7.75

: $4.80 divided by 96 = 0.05
0.05 x 155 = 7.75
It would cost Jaden $7.75

2) ONE 200 - Gram bag of rice cost $8.12. How much does 1 kilogram of rice cost? (Note that 1000g = 1kg.)

Answers

1000 gram = 1 kilogram
If 200 gram = $8.12. 1, it means we can get 5 bags of such amount (1000/200 = 5)
Therefore, 1kg = $8.12 * 5 = $40.6

Question 2
2.1
A car travels for 1 hour 30 minutes and covers a distance of 150 km. How
long (In hours and minutes) will it take the car to cover a distance of 260 km
at the same average speed?

Answers

Answer :

2 hours 36 minutes

Step-by-step explanation :

speed = distance / time

Distance = 150 km

time = 1 hour 30 minutes

= 1,5 hours

[tex]speed = \frac{150 \: km}{1.5 \: hours} [/tex]

[tex] speed = 100 \: km/hour[/tex]

Answer :

How long will it take the car to cover a distance of 260 km at the same average speed ?

Time = Distance/Speed

= 260 km / 100 km/hour

= 2,6 hours

____________________

to convert hours to hours and minutes we can multiply by 60.

2, 6 hours

2 hours and 0,6 hours

0,6 = 3/5

3/5 × 60

60 ÷ 5 × 3

36 minutes

2,6 hours = 2 hours 36 minutes

which is bigger negative 2 or negative 5?

Answers

Answer:

negative 2 is bigger

............. .

Answer:

-5 is less than -2 it's mean that -2 is bigger.

Step-by-step explanation:

Determine the simple interest. (The rate is an annual rate unless otherwise stated. Assume 360 days in one year.)
p= $375, r = 9.5%, t = 60 days

The simple interest is $ ____
(Round to the nearest cent as needed.)

Answers

if there are 360 days in 1 year, then 60 days is 60/360 = 1/6 of a year.

[tex]~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$375\\ r=rate\to 9.5\%\to \frac{9.5}{100}\dotfill &0.095\\ t=years\dotfill &\frac{1}{6} \end{cases} \\\\\\ I=(375)(0.095)(\frac{1}{6})\implies I\approx 5.94[/tex]

What happens to a graph that is representative of exponential decay? The graph goes:
a. down and to the right
c. up and to the right
b. down and to the left
d. up and to the left

Answers

Answer:

d

Step-by-step explanation:

0<1<b

Answer:

the answer is A ..

Step-by-step explanation:

The sum of two numbers is 3, and their quotient is 2. What are the two numbers?

Answers

Answer:

The answer is 2 and 1

Step-by-step explanation:

Sum means to add, so you are looking for two numbers that add up to equal 3.

2+1=3

Quotient means to divide, So secondly you would for two numbers that when divided equals 2

2 divided by 1 =2

hope this helps mark brainliest please :)

HELP PLSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

Answers

Answer:

x = 13 pls give

Step-by-step explanation:

brainliest again it got deleted twice lol

Elliot earns $12 per hour and $3 for each
sale he makes. He wants to earn more than $140
false. in an 8-hour workday. What is the least number
of sales he must make to reach his goal?

Answers

Answer:

420 sales

Step-by-step explanation:

140x3=420 sales

The students in Mr. Philips science class folded paper airplanes and threw them to see whose airplane would fly the farthest. They recorded the distances in both meters and centimeters. Based on this information, what is the measurement in centimeters of a paper airplane that flew 4.5 meters?
A) 450 centimeters
B) 405 centimeters
C) 45 centimeters
D) 4,050 centimeters

Answers

Since the airplane flew 4.5m, this means that it flew 450cm.

Please help ASAP! This is due soon


All bots and unknown links will be reported.
Please do not mention anything that happened to you in the past with this account if something did. As for I got this account just yesterday by someone who quitted.

Picture down below, question 11.

Thanks!

Answers

Answer:

x = 35

Step-by-step explanation:

The angles are alternate so their measure is equal:

2x = x + 35 get the like terms on the same side of the equation

2x - x = 35 subtract

x = 35

Measure

2x = 70 and

x + 35 = 70

I need help with question c

Answers

Answer:

take the common between dy and y

do similarly also with x .and make a equation

find the equation of the tangent line to f(x)=6/x at x=-2

Answers

Answer:

[tex]\displaystyle \large{y = - \frac{3}{2}x}[/tex]

Step-by-step explanation:

Hey there! To find a tangent line of curve at specific point, we have to differentiate a given function. This is because a tangent line has same slope as the specific point and slope is equivalent to dy/dx.

From a given function, we can write as [tex]\displaystyle \large{f(x) = 6x^{-1}}[/tex] via law of exponent where [tex]\displaystyle \large{a^{-n}=\frac{1}{a^n}}[/tex] .

Then differentiate with respect to x using power rules.

Power Rules

For every differentiatable continuous functions, if [tex]\displaystyle \large{f(u) = u^n \to f\prime (u) = nu^{n-1} \cdot u\prime}[/tex] for u is any function and n is all real number.

Therefore:-

[tex]\displaystyle \large{f(x) = 6x^{-1}}\\\displaystyle \large{f\prime(x) = (-1)(6)x^{-1-1} \cdot x\prime}\\\displaystyle \large{f\prime(x) = -6x^{-2} }[/tex]

Therefore, our derived function is [tex]\displaystyle \large{f\prime(x) =- 6x^{-2}}[/tex]

Then substitute x = -2 in a derived function or slope.

[tex]\displaystyle \large{f\prime(-2) = -6x^{-2}}\\\displaystyle \large{f\prime(-2) = -6(-2)^{-2}}\\\displaystyle \large{f\prime(-2) = -6 \cdot \frac{1}{(-2)^2}}\\\displaystyle \large{f\prime(-2) = -\frac{6}{4}}\\\displaystyle \large{f\prime(-2) = -\frac{3}{2}}[/tex]

Therefore, the slope at x = -2 is -3/2.

Now we have to use point-slope formula to find the equation of tangent line.

Point-Slope

[tex]\displaystyle \large{y-y_1 = m(x-x_1) \to y-f(x_1) = f\prime (x_1)(x-x_1)}[/tex]

We may have to find the (x,f(x)) coordinate first. We know x = -2 but we don’t know f(x) coordinate at x = -2 yet. We substitute x = -2 in f(x) to find f(-2).

[tex]\displaystyle \large{f(-2) = \frac{6}{-2}}\\\displaystyle \large{f(-2) = -3}[/tex]

Therefore, our coordinate is (-2,-3).

Substitute in point-slope form.

[tex]\displaystyle \large{y-(-3)=-\frac{3}{2}(x-(-2))}\\\displaystyle \large{y+3=-\frac{3}{2}(x+2)}[/tex]

Then convert to slope-intercept form by isolating y-term and simplify the expression.

[tex]\displaystyle \large{y = - \frac{3}{2}(x+2)+3}\\\displaystyle \large{y = - \frac{3}{2}x-3+3}\\\displaystyle \large{y = - \frac{3}{2}x}[/tex]

Therefore, the equation of tangent line is y = -3x/2.

12÷36.2 I need help because I'm getting a wrong answer I think ​

Answers

Answer:

0.331491713 but can convert to 60/181

Step-by-step explanation:

Find the area of each trapezoid.​

Answers

Step-by-step explanation:

(1). 1/2(5.6+14)(9)

1/2(19.6)(9)

(9.8)(9)

=88.2

(2). 1/2(14+9)(8)

1/2(23)(8)

(11.5)(8)

=92

(3). 1/2(4+6.1)5.2

1/2(10.1)5.2

(5.05)(5.2)

=26.26

1.) 88.2 cm²

2.) 92 cm²

3.) 26.26 m²

4.) 131.25 dm²

5.) 4 m²

If eight people can fit at the dinner table, how many tables will be needed for 148 dinner guests?

Answers

148/8 = 18.5

Nineteen tables. After all, you can’t have half a table

1. The graph of f. consisting of three line segments, is given to the right. Let g(x) = $* f (t)dt. a. Compute g(4) and g(-2)(Need help on C and D)​

Answers

Hi there!

c.

Looking at the graph, we can eliminate any possibility of t values on the positive t-axis being an absolute minimum. The only sign change in this interval is from positive to negative, which indicates a maximum.

We can find the value of t = -2 using the integral:

[tex]g(-2) = \int\limits^{-2}_1 {f(t)} \, dt[/tex]

Rewrite in proper format:
[tex]g(-2) = -\int\limits^1_{-2}{f(t)} \, dt[/tex]

Solve using the graph:
[tex]g(-2) = -\frac{1}{2}bh = -\frac{1}{2}(3 \cdot 4) = -6[/tex]

There is an absolute minimum value of g at x = -2. Using the above integral, we get a value of g(-2) = -6, which is the lowest value attainable over the interval.

d.

There is an inflection point at x = 1 because the second derivative changes from positive to negative at this value. (Changes signs). There is NOT an inflection point at x = 2 because the second derivative remains negative, although with a different value.

How many different pairs of faces are congruent in a rectangular prism that is not a cube

Answers

Answer:

2

Step-by-step explanation:

every rectangular prism has 6 faces, 2 will be congruent together and thw other 4 will be congruent to each other

Find the area and perimeter thank you math experts have a wonderful day

Answers

Answer:

All below;

Step-by-step explanation:For the left shape;

Green question mark = 10

50 (longer opposite side) - 40 = 10

Red question mark = 20

30 (longer opposite side) - 10 = 20

Perimeter = 160

30 + 50 + 10 + 40 + 20 + 10 = 160

Area = 700

30 * 50 = 1500; (Total area if it were fully a rectangle)

40 * 20 = 800; (Chunk of rectangle that is missing)

1500 - 800 = 700 (Total area - missing space)

For the right shape;

Green question mark = 14

Opposite of the other side

Red question mark = 20

35 (longer opposite side) - 15 = 20

Perimeter = 152

35 + 22 + 20 + 14 + 10 + 14 + 15 + 22 = 152

Area = 630

35 * 22 = 770; (Total area if it were fully a rectangle)

14 * 10 = 140; (Chunk of rectangle that is missing)

770 - 140 = 630 (Total area - missing space)

Problem 2: Solve the initial value problem
[tex]y' = xy[/tex]
[tex]y(0) = 1[/tex]

Answers

Separate the variables:

y' = dy/dx = xy   ⇒   1/y dy = x dx

Integrate both sides:

∫ 1/y dy = ∫ x dx

ln|y| = 1/2 x² + C

Given that y(0) = 1, we have

ln|1| = 1/2 • 0² + C   ⇒   C = 0

so that the particular solution is

ln|y| = 1/2 x²

Solving for y gives

y = exp(1/2 x²)

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