A room is heated by means of a charcoal fire, an occupants of the room standing away from the fire is warmed mainly by

Which of the following phenomena cannot be explained by the molecular theory of matter?

The friction which exist between two layers of liquid in relative motion is called.

A particle of mass M initially at rest splits into two. If one of the particles of mass M1 moves with velocity V1 , the second particle moves with velocity

To keep a vehicle moving at a constant speed V requires power P from the engine. The force provided by the engine is