(a) State Heisenberg's uncertainty principle. (b) Mention two phenomena that can only be explained in terms of the particulate nature of light.

If the force of attraction between the sun and the 1 planets is removed; the planets will

A net force of magnitude 0.6N acts on a body of mass 40g, initially at rest. Calculate the magnitude of tire resulting acceleration.

Palm oil from a bottle flows out more easily after it as been heated because the

The force between molecules of the same substance is termed

A motorcyclist, passing a road junction, moves due west for 8 s at a uniform speed of 5ms-1. He then moves due north for another 6 s with the same speed. At ...

A body weighing 10N moves with a speed of 5ms-1 in a horizontal circular path of radius 5m. Calculate the . magnitude of the centripetal force acting on the ...

A stone of mass 0.7kg is projected vertically , upwards with a speed of 5ms-1. Calculate the maximum height reached. (Take g as 10ms-2 and neglect air resist...

The time rate of change of displacement is known as