When a lead-acid accumulator is fully charged, evolution of gases occurs at the electrodes. Name these gases and the respective electrodes at which thcy are...

A stone is projected vertically upward with a speed of 30ms\(^{1}\) from the top of a tower of height 50 m. Neglecting air resistance, determine the maximum ...

An X-ray tube operates at a potential of 2500 V. If the power of the tube is 750 W, calculate the speed of the electron striking the target. [e = 1.6 x 10\(^...

(a) State two factors which affect the mass of elements deposited during electrolysis. (b) List two non-electrolysis.

(a) List two examples each of substances with: (i) low viscosity; (ii) high viscosity. (b) When is a liquid said to be viscostatic?

A force of 40 N is applied at the free end of a wire fixed at one end to produce an extension of 0.24 mm. If the original length and diameter of the wire art...

(a) Differentiate between plane polarization and interference as applied to waves. (b) List two uses of polaroids.

(a) Write down the names of two particles used in explaining the wave nature of matter. (b) State the wave characteristics which are exhibited by the particl...

State one reason each why cathode rays: (a) are not electromagnetic waves; (b) cast sharp shadows of objects in their path; (c) can rotate a light paddle whe...