In uniform circular motion, which of the following quantities are constant: speed, instantaneous velocity, centripetal acceleration, the magnitude of the net force?

Explanation:

In uniform circular Motion magnitude of velocity is constant but its direction is keep on changing. So Instantaneous velocity is not constant while speed is constant. centripetal acceleration is given by

where v=velocity and r=radius

magnitude remains same but its direction is keep on changing

magnitude of net Force is given by

as v and r is constant in magnitude therefore F is constant

We can say that speed and Magnitude of force is constant but velocity and centripetal acceleration is constant

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge