Physics Questions

For what is Mohs scale used?

The tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called

Diamond does not conduct electricity, because

An object weighing 20 kg is raised through a height of 2 m. What will be the work done by the force of gravity in this process?

An object having a mass 'm' moving with a velocity 'v' possesses a kinetic energy 'K'. If its velocity is doubled, its kinetic energy will become:

Consider a planet whose mass and radius are both twice the mass and radius of Earth. The acceleration due to gravity on the surface of the planet is 'n' times that on Earth. The value of n is:

Which among the following is not an environment friendly mode of producing electricity?

A ball, thrown vertically upward, rises to a height of 80 m and returns to its original position. The magnitude of its displacement after 7 s of motion will be ____. (take g = 10 m/s2)