Physics Past Questions and Answers

In a wave the maximum displacement of particles from their equilibrium positions is called.

A string is stretched between two points 50cm apart. It is then plucked at its center and the velocity of the wave produced is 300m/s. Calculate the number of vibrations made by the string in 1s.

Which of the following is not a property of longitudinal waves?

What is the gravitational potential due to a molecule of mass, m and at a distance, r from it? (G = gravitational constant).

Calculate the escape velocity for a rocket fired from the earth's surface at a point where the acceleration due to gravity is 10ms^-2 and the radius of the earth is 6 x 10⁶m.