Author Question: A typical public utility (power company) supplies electricity at an approximate cost of A) 10./kW ... (Read 58 times)

HudsonKB16 · **on:** Jul 27, 2018

A typical public utility (power company) supplies electricity at an approximate cost of

A) 10./kW h.
B) 10./kW h.
C) 1./kW h.
D) 1./kW h.
E) 100./kW h.

Question 2

The end of a cylindrical plastic rod is polished and cut perpendicular to the axis of the cylinder.

Determine the minimum index of refraction so that a light ray entering the end of the rod will always be totally internally reflected within the rod, i.e., it will never escape the rod until it comes to the other end. Assume a critical angle of 45.