A steady current of 0.15 A exists in a wire for 20 s.
a. How much net charge passes by a point in the wire?
b. How many electrons does this charge represent?
Question 2
A layer of water (n = 1.333) floats on carbon tetrachloride (n = 1.461) contained in an aquarium. To the nearest degree, what is the critical angle at the interface between the two liquids?
a. 88
b. 78
c. 66
d. 58
e. 43