Author Question: What is the period of a signal that has a frequency of 60 Hz? a. 60 s c. 1/60 s b. 60 s-1 d. not ... (Read 29 times)

Caiter2013 · **on:** Jul 28, 2018

What is the period of a signal that has a frequency of 60 Hz?
a. 60 s c. 1/60 s
b. 60 s-1 d. not determinable

Question 2

Which expression gives the speed of light v in a substance in terms of the index of refraction n of a substance and the speed of light c in a vacuum?
a. v = c/n
b. v = c n
c. v = c + n
d. v = n/c
e. v = c/n2