A. Derive the magnetic field along the axis of a circular current carrying conductor. B. Extend the result in part a. to multiple circular conductors to derive the magnetic field at the center of a solenoid which is
B = muonI

Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?