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Radda [10]
1 year ago
11

The student measured the extension for five different forces rather than just measuring the extension for one force. Suggest why

.​
Physics
1 answer:
Oksanka [162]1 year ago
4 0

The student measured the extension for five different forces rather than just measuring the extension for one force to identify anomalies. This is further explained below.

<h3>What is measurement?</h3>

Generally, measurement is simply defined as the process of determining the size of something.

In conclusion, The student took five separate measurements of extension for various forces in order to better detect any discrepancies.

Read more about measurement

brainly.com/question/3780384

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Answer:

W = 1.06 MJ

Explanation:

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- As for the width of the part w we see that it varies as we move up and down the differential element. We will draw a rectangle whose base axis is x and vertical axis is y. we will find the equation of the slant line that comes out to be y = 0.5*x. And the width spans towards both of the sides its going to be 2*y = x.

- Now develop and expression of Force required:

                                             F = p*V*g

                                             F = 1000*(2*0.5*x*8*dx)*g

                                             F = 78480*x*dx

- Now, the work done is given by:

                                             W = F.s

- Where, s is the distance from top of hose to the differential volume:

                                             s = (5 - x)

- We have the work as follows:

                                            dW = 78400*x*(5-x)dx

- Now integrate the following express from 0 to 3 till the tank is empty:

                                           W = 78400*(2.5*x^2 - (1/3)*x^3)

                                           W = 78400*(2.5*3^2 - (1/3)*3^3)

                                           W = 78400*13.5 = 1058400 J

 

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