List three advantages of fluorescent tubes over filament bulbs.

(a) State two factors on which surface tension depends. (b) How can mosquito larvae be made to sink in stagnant water?

A particle is projected horizontally at 15ms\(^{-1}\) from a height of 20m. Calculate the horizontal distance covered by the particle just before hitting the...

(a) Define stable equilibrium as applied to a rigid body. (b) Sketch a block and tackle system of pulleys with a velocity ratio of 3. (c) At the beginning of...

A particle is dropped from a vertical height h and falls freely for a time t. With the aid of a sketch, explain how h varies with \(t^2\)

List three phenomena which can be explained by the molecular theory of matter.

(a) State two deductions that can be made from a displacement-time graph. (b) If the distance beween two equal masses is doubled and their individual masses ...

List three advantages of p - n junetion diode over diode valve.

A spiral spring has a length of 14cm when a force of 4N is hung on it. A force of 6N extends the spring by 4cm. Calculate the unstretched length of the spring