A problem with the classical theory for radiation from a blackbody was that the theory predicted too much radiation in the ________________ wavelengths.
A. ultraviolet
B. visible
C. infrared
D. microwave
E. radio
A. ultraviolet
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Polyethylene is mechanically soft because different long-chain molecules in polyethylene are held together with weak ______________ bonds.
Fill in the blank(s) with the appropriate word(s).
Distance divided by time
A. Gerard de Vaucouleurs |
B. Georges Lemaître |
C. Hubble’s Law |
D. Edwin Hubble |
E. Velocity or Speed |
F. Ho |
A 60.0 cm long brass rod is suspended at the ends by long strings. The rod is struck at one end parallel to the rod and causes the rod to vibrate longitudinally with the ends free. 
The frequency of the vibration is
A. 3,790 Hz. B. 3,540 Hz. C. 3,120 Hz. D. 2,720 Hz. E. 2,140 Hz.
A puddle of water (n = 1.33) is covered with a very thin layer of oil (n = 1.20). How thick is the oil in the region that strongly reflects light with a wavelength of 531 nm?
a. 111 nm b. 221 nm c. 443 nm d. 295 nm e. 239 nm