Which configuration would produce an electric current?
a. rotate a coil of copper wire between two magnets.
b. connect a wire between a copper and zinc strip sitting in a beaker of water.
c. connect a wire to the (+) positive end of a battery and the other end to a light bulb.
d. connect a wire to the negative end of a battery and the other end to a light bulb.

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?