Author Question: In addition to the electric force law and the magnetic force law, the other key principle that is ... (Read 89 times)

theo · **on:** Jul 29, 2018

In addition to the electric force law and the magnetic force law, the other key principle that is needed to explain electromagnetic waves is

A) electromagnetic forces can be felt across a distance.
B) Newton's law of motion.
C) electromagnetic fields are established instantaneously.
D) forces always come in pairs, so for every sender of electromagnetic force there must be a receiver.
E) electromagnetic fields are not established instantaneously.

Question 2

How do coal power plants and nuclear power plants differ?

A) One has a stack--i.e., smokestack--and the other doesn't.
B) They use different fuels.
C) Both of the above.
D) One uses a cooling tower or a cooling lake or river, and the other doesn't.
E) All of the above.