I think its E. the control rods are used to control <span>the fission rate of uranium and plutonium. Hope this helps!! </span>
Answer:
Explanation:
Machines simply make work easier to do. They increase the amount of force exerted on a body and also the distance through which the force is applied. Also, they can also change the direction through which force on them is applied in order to produce much more work.
Work done = force x distance
The input force in a machine is attenuated to yield even more force. This is the purpose of designing a simple machine. When the force increases, more work would be produce with our little effort applied on the body.
Work done is a function of the force applied on a body and the distance through which it moves.
B
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A light that is 3.98 times the distance from its source will have an intensity of 15.8404W/m^2
<h3>Calculation of light intensity</h3>
The relationship between the distance of light and intensity is that intensity varies inversely with the square of the distance from the source.
That is to say,if the distance of light is increased by 3.98 times, the light intensity is decreased by square of 3.98.
Therefore, the intensity is 3.98² = 15.8404W/m^2
Learn more about light intensity here:
brainly.com/question/2114560
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