A spinning top rotates so that its edge turns at a constant speed of 0. 63 m/s. If the top has a radius of 0. 10 m, what is the centripetal acceleration of the edge of the top?.

An electron moving at 5.06 103 m/s in a 1.23 t magnetic field experiences a magnetic force of 1.40 10-16 n. what angle does the velocity of the electron make with the magnetic field? there are two answers between 0° and 180°. (enter your answers from smallest to largest.)