Physics Past Questions and Answers

Isotopes are nuclei which have

A radioactive sample initially contains N atoms. After three half-lives the number of atoms that have disintegrated is

The velocity time graph above describes the motion of a particle between two points P and Q. What is the distance between P and Q?

the fig above shows two connected bodies of masses M1 and M2 in equilibrium under gravity. The tension in the upper string is

A 50kg block is dropped from a point 10cm above as shown in the fig above. if the force constant of the spring is 4.0 x 10<sup style='font-size: smaller;'>4</sup>Nm<sup style='font-size: smaller;'>-1</sup>, find the maximum compression of the spring <br/>[g = 10ms<sup style='font-size: smaller;'>-2</sup>]