A wire that is 0.36 meters long moves perpendiculariy through a magnetic field at a speed of 0.21 meters/second. The induced emf produced in the wire is 0.45 volts. What is the magnetic field strength?
OA 0.034 newtons/amp-meter
OB.
Oc. 0.26 newtons/amp-meter
OD. O.77 newtons/amp-meter
OE. 6.0 newtons/amp-meter
0.17 newtons/amp-meter

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?