Physics Questions

If the velocity of a body becomes two times its initial velocity, its kinetic energy becomes n times its initial kinetic energy. What is the value of n?

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

Multiplication of equivalent weight and valency of an element is equal to ______.

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?

The energy released at the end of digestion is in the form of

Sensitivity of potentiometer can be increased by

Knife is an example for

Two identical resistors of 20 ohm each are connected in parallel. This combination, in turn, is connected to a 10 ohm resister. The equivalent resistance of the combination will be