How far above the horizon is the moon when its image, reflected in a calm lake, is completely polarized? (nwater = 1.33.)
a. 22.2°
b. 7.7°
c. 16.6°
d. 36.9°
e. 53.1°
d
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What is not a life-cycle cost associated with a power plant?
a. capital cost b. maintenance c. cost of electricity sold d. fuel cost e. staffing
The Sun is at the vernal equinox within one or two days of which of the following dates?
a. March 21 b. September 22 c. December 22 d. June 21
According to special relativity, two events that occur simultaneously in one frame of reference
A) are also simultaneous in all frames of reference. B) can be non-simultaneous in another frame of reference. C) is evidence for the constant speed of light. D) are in reality non-simultaneous.
A proton moves around a circular path (radius = 2.0 mm) in a uniform 0.25-T magnetic field. What total distance does this proton travel during a 1.0-s time interval? (m = 1.67 × 10?27 kg, q = 1.6 × 10?19 C)
A. 82 km B. 59 km C. 71 km D. 48 km E. 7.5 km