Why is nuclear energy able to be used for practical purposes? the reactions are controlled to regulate energy output. the reacti
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The amount of power change if less work is done in more time"then the amount of power will decrease".
<u>Option: B</u>
<u>Explanation:</u>
The rate of performing any work or activity by transferring amount of energy per unit time is understood as power. The unit of power is watt
Here this equation showcase that power is directly proportional to the work but dependent upon time as time is inversely proportional to the power i.e as time increases power decreases and vice versa.
This can be understood from an instance, on moving a load up a flight of stairs, the similar amount of work is done, no matter how heavy but when the work is done in a shorter period of time more power is required.
Answer:
Wave 1 and Wave 2.
Explanation:
We know that the general equation of a wave is given by :
or
We know that the speed of a wave is given by :
Where
= angular speed
k = propagation constant
Wave 1.
Wave 2.
Wave 3.
Wave 4.
It is clear that wave 1 and 2 have the same speed i.e. 7 m/s. Hence, this is the required solution.