The period of Jupiter's orbit around the sun is approximately 12 years. What is the approximate distance from the sun to Jupiter?
a. 144 AU
b. 1728 AU
c. 42 AU
d. 5.2 AU
e. 2.3
D
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If we know the average separation and period of revolution for a binary system, we can then measure
A) the actual luminosity of each star. B) the actual mass of both individual stars. C) their absolute magnitudes. D) the actual sizes of the two stars. E) the total mass of the system.
Three satellites are launched into space connected together. Once in deep space, an explosive charge separates the three satellites and they move apart. The satellites each have different masses with m1 < m2 < m3 . Which of the following statements is always true?
a. The one with mass m1 receives the greatest impulse. b. The one with mass m3 receives the greatest impulse. c. The all must receive equal impulses. d. Although one or more of the above statements could be true in special cases, they are not always true.
An object placed at a distance farther from a converging lens than the focal point always produces an image that is
A. The same size as the object B. Inverted C. Virtual D. Smaller than the object
A solar cell has a light-gathering area of 12.4 cm2 and produces 0.49 A at 0.93 V (dc) when illuminated with sunlight of intensity 884 W/m2 . What is the efficiency of the solar cell?
a. 42% b. 3.4% c. 64% d. 1.7% e. 19%