4.20 V of electromotive force are induced on a 427-mm-long piece of wire that is moving at a rate of 0.186 m/s. What is the magnetic field that induced the EMF? a. 1.89×10-2 T
b. 52.9 T
c. 0.334 T
d. 5.29×104 T

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.