A ray of light strikes a thick sheet of glass (n = 1.5) at an angle of 46° with the normal. Find the angle of the refracted ray within the glass with respect to the normal
a. 25°
c. 29°
b. 56°
d. 16°
C
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Potential Energy: A 7.0-?C point charge and a 9.0-?C point charge are initially extremely far apart. How much work does it take to bring the 7.0-?C point charge to the point x = 3.0 mm, y = 0.0 mm, and the 9.0-?C point charge to the point x = -3.0 mm, y = 0.0 mm? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 95 J B. 190 J C. 63 J D. 16 J
Saturn's cloud layer is over twice as thick as Jupiter's cloud layer
Indicate whether the statement is true or false
By what factor is the intensity of sound at a rock concert louder than that of a whisper when the two intensity levels are 120 dB and 20 dB respectively?
a. 1012 b. 108 c. 106 d. 1010 e. 1011
The ____ of the Moon and Sun vary slightly because the orbits of the Moon and Earth are slightly elliptical
a. angular distance b. linear diameter c. linear distance d. angular diameter e. angular momentum