A converging lens produces an image four times as large as an object placed 25cm from the lens. Calculate its focal length

A moving object is said to have a uniform acceleration if its

A ball f mass 5.0kg hits a smooth vertical wall normally with a speed of 2ms-1. Determine the magnitude of the resulting impulse

A force acts on a body for 0.5s changing its momentum from 16.0kg ms-1 to 21.0kgms-1, calculate the magnitude of the force

The period of an oscillatory motion is defined as the

The tendency of a body to remain at least when a force is supplied to it is called

A tuber of cassava can be processed into powder. This explains the face that

The mass on a loaded spiral spring oscillates vertically between two extreme positions P and R equidistant from the equilibrium position Q. Which of the foll...

A piece of metal of relative density 5.0 weighs 60N in air. Calculate its weight when fully immersed in water