Physics Questions

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

Which of the following physical quantity measures the rate of work done?

Two particles with charges q1 and q2 are kept at a certain distance to exert force F on each other. If the distance is reduced to one-fifth, then the force between them is

Nautical miles to km formula

Which of the following changes when a body performs uniform circular motion?

Which of the following devices converts Chemical energy into Electrical energy?

Which of the following is a characteristic of an exothermic reaction?

Two particles with charges q1 and q2 are kept at a certain distance to exert force F on each other. If the distance is reduced to one-fifth, then the force between them is