When the adjustable mirror on the Michelson interferometer is moved 20 wavelengths, how many fringe pattern shifts would be counted?
a. 5
b. 10
c. 20
d. 40
e. 80
e
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A nearsighted person wears contact lenses having a power of -0.15 diopters. What is the person's uncorrected far point?
A) 1.5 m B) 3.3 m C) 6.0 m D) 6.7 m
Chromium-55 (54.9408 u) emits an electron leaving a daughter nucleus of manganese-55 (54.9380 u). How much energy is released in this reaction? (1 u = 931.5 MeV/c2)
a. 2.61 MeV c. 5.59 MeV b. 0.70 MeV d. 1.40 MeV
The belts of Jupiter are best described as :
A) regions of downward moving material and low pressure. B) regions of upward moving material and low pressure. C) regions of upward moving material and high pressure. D) regions of downward moving material and high pressure. E) turbulent regions with no organized circulation pattern.
A conducting bar of length L rotates in a counterclockwise direction with a constant angular speed of +2.0 rad/s about a pivot P at one end, as shown. A uniform magnetic field (magnitude = 0.20 T) is directed into the paper. If L = 0.40 m, what is the potential difference, VA?VB?
A. +24 mV B. ?24 mV C. +16 mV D. ?16 mV E. +32 mV