Polarization of light can be achieved using a dichroic material like Polaroid by which of the following processes?
a. reflection
b. double refraction
c. selective absorption
d. scattering
c
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A ray of light enters an equilateral prism made of material with n = 1.45. What angle of incidence,
will cause the internally refracted ray to be parallel to the base of the prism?
A. 46.5 
B. 30.0
C. 20.2
D. 5.70
E. this cannot happen
In a design using the aluminum alloy 7075-T6, would it be safe to assume that a part could withstand an infinite number of stress applications that are only 50 % of the yield stress? _________
Fill in the blank(s) with the appropriate word(s).
The ecliptic is tilted by ________ degrees relative to the Celestial Equator.
A. 32.5 B. 11 C. 66.5 D. 23.5 E. 25
Molly measures a Hubble constant of 20 km/sec/million light-years. Sam measures a Hubble constant of 25 km/sec/million light-years. All other assumptions being the same, which person would estimate a LARGER age to the universe?
A) Sam B) Molly C) They both would measure the same age.