what distance does the electromagnetic radiation travel in 50.0 (nu)s?

Answer 1

I don't know that a (nu)s is, but what you do is multiply the time by the speed of light (3.00*10^10 cm/s) for the answer.

1 nanosecond (ns) = 10^-9 s
1 microsecond (ìs) = 10^-6 s

Answer 2

isn't it that the formula is c=λv, so divide wavelength is c/v, not multiply?
[it is 50.0 microsecond]

Answer 3

No. They don't ask anything about frequency. They ask how far the radiation travels

D = V*t