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

Physics & Space Science

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What is not a life-cycle cost associated with a power plant?

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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

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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.

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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

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