Which of the following is NOT icy in composition?
A) comet nuclei
B) Kuiper Belt Objects
C) the polar cap of Mars
D) asteroids
E) most Jovian satellites
D
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Index of Refraction: Light having a speed in vacuum of 3.0 × 108 m/s enters a liquid of refractive index 2.0. In this liquid, its speed will be
A. 6.0 × 108 m/s. B. 3.0 × 108 m/s. C. 1.5 × 108 m/s. D. 0.75 × 108 m/s. E. 0.67 × 108 m/s.
Coal beds are formed from the accumulation of plant material that becomes trapped in swamp floors. Yet coal deposits are present in the continent of Antarctica, where no swamps or vegetation exists. How can this be?
What will be an ideal response?
The R value of fiberglass batting, 3.5 inches thick, is 11 ft2/°F/h/BTU. What is the thermal conductivity (in BTU/ft/°F/s)?
a. 7.4 × 10^?6 b. 2.7 × 10^?2 c. 8.9 × 10^?5 d. 1.4 × 10^?4 e. 3.6 × 10^?3
A student designs a clock using a mass and a spring. Each oscillation of the mass advances the clock by one second. When the student builds the clock, he discovers he erred and each oscillation takes two seconds
What change can he make to fix the clock? A) double the amplitude of the oscillations B) quadruple the spring constant of the spring C) double the spring constant of the spring D) quadruple the mass E) double the mass