(a) Define horizontal range of a projectile.

(b) The horizontal range, R, of a projectile is given by the equation R = \(\frac{u^2 sin 2\theta}{g}\)

(i) what does \(\theta\) in the equation represent?

(ii) for what value of \(\theta\) would R be maximum?

 Explain the action of direct electric current in an electrolytic process with a dilute solution of sodium chloride as electrolyte

(a) What is meant by;

(i) anode;

(ii) cathode, as used in electrolysis?

(b) List the ions involved in an electrolytic process with dilute tetraoxosulphate (VI) acid as electrolyte

(a) Explain how neon signs can be produced.

(b) State two factors on which the colour of light from a fluorescent tube depend.

Explain why a direct electric current is used instead of an alternating current in electroplating.