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 spri...

(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.

List three advantages of fluorescent tubes over filament bulbs.