A waves frequency (in Hertz) is how many crests pass by a point per second. easily confused with period, which is the amount of time it takes for a full wave to pass by a certain point
Answer:
Explanation:
Two
The nuclear force does not work
under long distances
is greater in strength the the electomagnetic force when the distances are small.
I'm not sure what D means.
I think it does depend on charge.
You have to choose D but this is a notes question and I'm not at all certain of the answer.
One
If its number is 19, the the number of protons = the number of electrons = 19
Answer B