Answers

The horizontal component of the initial speed of a particle projected at 30° to the horizontal is 50…

A projectile is released with a speed u at an angle (theta) to the horizontal. With the aid of…

 (a) Write Einstein’s photoelectric equation and identh: each component of the equation. (b) For a photocell, star; one…

(a) Define electromotive force. (b) State: (i) the principle of operation of a potentiometer, (ii) two advantages that…

(a) State the three characteristics of sound and the factor on which each of them depends. (b) Explain…

a) Define heat capacity and state its unit. (b) List two effects of heat on a substance. (c)…

(a) Give two examples each of: (i) rotational motion; (ii) linear motion. (b) Describe a laboratory experiment to…

(a) State two conditions under which photo-electrons can be emitted from the surface of a metal. (b) List…

The diagram above represents the graph of electron energy against the frequency of the radiation incident on a…

(a) Explain how a gas can be made to conduct electricity. (b) Name the electric charge carriers in…