A 20kg mass is to be pulled up a slope inclined at 30° to the horizontal. If efficiency of the plane is 75%. The force required to pull the load up the plane is J [g=10ms\(^{− 2}\)]

The tendency of a body to remain at rest when a force is applied to it is called.

An object is placed 20cm from a concave mirror of focal length 10cm. The linear magnification of the image produced is?

The energy needed to move a unit positive charge around a complete electric circuit is called the

A force of 5N acts at a point Y on a rod XYZ as shown in this diagram. If XYZ is 2m, what is the moment of the force about point X?