The plane of a flat, circular loop of wire is horizontal. an external magnetic field is directed perpendicular to the plane of the loop. the magnitude of the external magnetic field is increasing with time. because of this increasing magnetic field, an induced current is flowing clockwise in the loop, as viewed from above. what is the direction of the magnetic field, assuming the situation is drawn on a sheet of paper?

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?