The unit of work is joule. The other physical quantity that has same unit is
The spring will have maximum potential energy when
The energy possessed by an oscillating pendulum of a clock is
The gravitational potential energy of an object is due to
A ball is dropped from a height of 10 m.
If the velocity of a body is doubled its kinetic energy
How much time will be required to perform 520 J of work at the rate of 20 W?
A student carries a bag weighing 5 kg from the ground floor to his class on the first floor that is 2 m high. The work done by the boy is
The work done is ‘0’ if
One unit of electrical energy is equal to