D)
Whenever a person is climbing up a rope, or when the force is being pulled down by the rope, it's called tension.
Answer: Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second. In this case, there is 1 cycle per 2 seconds. So the frequency is 1 cycles/2 s = 0.5 Hz.
…………………………………………………………………………
Answer:
Yes it is true saying that 2nd applience use more power than first one
Answer:
In physics, mass–energy equivalence is the principle that anything having mass has an equivalent amount of energy and vice ve