We can see each other in the classroom right now because we
A) emit visible light.
B) emit thermal radiation.
C) emit infrared light.
D) reflect visible light.
E) reflect infrared light.
D) reflect visible light.
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Suppose that at time t = 0 an electron in a magnetic field in the +z direction has state 
. Let 
The expectation value 
as a function of time in this case is which of the below?
A. 
B. 
C. 0
D. 
E. 
F. Something else (specify)
The only spacecraft to go into orbit around Jupiter was:
A) Voyager 2. B) Pioneer 10. C) Cassini. D) Galileo. E) Viking I.
A hoop (I = MR2) is rolling along the ground at 10 m/s. It comes to a hill and starts going up. Assuming no losses to friction, how far does it travel vertically up the hill before it stops?
a. 10 m c. 5.1 m b. 3.7 m d. 7.7 m
What is the wavelength m of light in a material?
a. m = n b. m = /n c. m = + n d. m = 3 e. m = n/