Q. A long wire lying along the x-axis carries a current of 2.8 A in the +x direction. There is a uniform magnetic field present, given by B=0.003i + 0.004j + 0.002k, where i, j, k are the unit vectors along the cartesian coordinate axes') in units of Tesla. Compute the y-component of the magnetic force acting on a segment of wire of length L = 17cm.
Q. A juggler performs in a room whose ceiling is 4 m above the level of his hands. He throws an apple vertically upward so that it just reaches the ceiling. With what initial speed does he throw the apple?