Two long parallel current carrying wires carry currents i1= 2.0 A and i2= 3.5 A and are separated by a distance d= 15.0 cm as shown in the diagram. At what location y would a third parallel wire carrying a current i = 5.0 A need to be placed so that it feels zero net magnetic force?

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.