Physics Past Questions and Answers

When a pentavalent impurity is added to a pure semiconductor, it becomes

The value of x, y and z respectively in the expression M^xL^yT^z for the universal gravitational constant G are

An air craft attempt too fly due north at 100 kmh^-1. If the wind blows against it from east to west at 60 kmh^-1, its resultant velocity is

A car accelerate uniformly from rest at 4 ms^-2. How far will it travel in the fifth complete second?

A body of mass 12kg traveling at 4.2ms^-1 collides with a second body of mass 18kg at rest. Calculate their common velocity if the two bodies coalesce after collision