Along solenoid has a length of 0.64 m and contains 1500 turns of wire. there is a current of 5.4 a in the wire. what is the magnitude of the magnetic field within the solenoid?

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n