Physics Questions

A curved mirror where the reflecting surface is curved inwards is called a

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

A rocket is launched to travel vertically upward with a constant velocity of 20 m/s. After travelling for 35 seconds, the rocket develops a snag and its fuel supply is cut off. The rocket then travels like a free body. The height achieved by it is

Friction is caused by the ______________ on the two surfaces in contact.

A compressed spring possesses more energy than a spring of normal length because the compressed spring has

A force of 20 N displaces an object through 2 m and does a work of 20 J. The angle between the force and displacement is

A high jumper runs for a while before taking a high jump so that the inertia of __ helps him take the long jump.

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