Physics Questions

The energy stored in a dry cell is in the form of

A ball is dropped from a height of 10 m. It strikes the ground and rebounds up to a height of 2. m. During the collision, the per cent loss in the kinetic energy is

Find the potential energy gained by a body of mass 50 kg, if it is raised by 10m. (use g = 10 m/s2)

Echocardiogram is more closely related to

Two identical resistors, each of 10 ohm, are connected in parallel. This combination, in turn, is connected to a third resistor of 10 ohm. The equivalent resistance of the combination is ___.

The quantum theory of light was given by

If I is the current through a wire and e is the charge of an electron, then the number of electrons crossing in t seconds will be given by

Acceleration is