False, while holding the book it means there is no work done on the book.
Answer:
261.64 hz
Explanation:
speed = distance/ time
s= 200/0.78= 256.41 ms^-1
by using v= (f) x ( lambda)
256.41/ 0.98 = f = 261.64 hz
Answer:
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Explanation:
Given
<em>Represent mass of April with M and mass of the suitcase with m; such that</em>
<em />
<em>Represent initial velocity of April with U and initial velocity of the suitcase with u; such that</em>
(because she's resting on the skateboard, initially)
<em>After she catches the suitcase, she, the skateboard and the suitcase moves at the same velocity.</em>
Represent this velocity with v
The above given information can be representing using law of conservation of momentum.
Substitute the values of M,U, m and u.
This gives
Divide both sides by 80
<em>Hence, they moved at a velocity of 0.5625m/s</em>
Nuclear energy is is used practically for many energy requirements because the reactions are controlled to regulate energy output
<h3>What is nuclear energy?</h3>
Nuclear energy is the energy reaelesed during nuclear relations.
Nuclear energy is a clean form of energy which is available in enormous amounts.
Nuclear energy is is used practically for many energy requirements because the reactions are controlled to regulate energy output.
Therefore, the control of nuclear reactions make the use if nuclear energy possible.
Learn more about nuclear reactions at: brainly.com/question/25387647
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