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....

(a) Define angle of contact (b) Draw sketches to show angles of contact for a capillary tube dipped vertically in (i) water; (ii) mercury.

(a) Differentiate between interference and polarisation as applied to waves. (b) Mention two uses of polaroids

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

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

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

A body of mass 0.6kg is thrown vertically upward from the ground with a speed of 20ms\(^{-2}\). Calculate its; (i) potential energy at the maximum height rea...

During the electrolysis of copper (II) tetraoxosulphate (VI) solution, a steady current of 4.0 x 10\(^2\) A flowing for one hour liberated 0.48 g of copper. ...

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...