In spherical polar coordinates (r, theta, phi), theta denotes the polar angle around z-axis and phi denotes the azimuthal angle raised from x-axis. Then the y-component of Pvec is given by

There is a ball of mass 320 g. It has 625 J potential energy when released freely from a height. The speed with which it will hit the ground is

Starting from rest a vehicle accelerates at the rate of 2 m/s² towards east for 10s. It then stops suddenly. It then accelerates again at a rate of 4√2 m/s² for next 10 s towards south and then again…

An electron and a proton starting from rest are accelerated through a potential difference of 1000 V. Which one of the following statements in this regard is correct?

A boy completes one round of a circular track of diameter 200 m in 30 s. What will be the displacement at the end of 3 minutes and 45 seconds?

An electron and a proton starting from rest get accelerated through potential difference of 100 kV. The final speeds of the electron and the proton are Ve and Vp respectively. Which one of the follow…