Physics Past Questions and Answers

Using the force displacement diagram shown above. Calculate the work done

A machine of efficiency 8% is used to raise a body of mass 75kg through a vertical height of 3m in 30s. Calculate the power input. (g = 10ms^-2)

Two bodies P and Q, are in thermal equilibrium, which of the following statements about the bodies is correct?

The cubic expansivity of mercury is 1.8 x 10^-4K^-1 and the linear expansivity of glass 8.0 x 10^-6K^-1, calculate the apparent expansivity of mercury in a glass container

The diagram shows the variation of volume V of a glass with temperature at the point X is