Physics Past Questions and Answers

What is a projectile? Give four examples of projectiles in everyday life

a) Define the term surface tension
(b) Calculate the force required to lift a needle 4cm long off the surface of water if the surface tension of water is 7.3 x 10\(^{-4}\) NM\(^{-1}\)

State any three properties of matter which are common to all substances.

Define (i) Elasticity; (ii) Young's modulus; (iii) Force constant.

A force of 40 N is applied at the end of a wire 4m long and produces an extension of 0.24mm. If the diameter of the wire is 2.00mm, calculate the;
(i) stress on the wire; (ii) strain in the wire.