Why did the Moon's internal heat escape more rapidly than Earth's?
What will be an ideal response?
Because of the Moon's small size, heat could escape more quickly. The Earth's rocky layers act as a layer of insulation, making it harder for the heat to escape.
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A skydiver's terminal velocity will be greatest if she falls
A) head first. B) lying flat on her back. C) lying flat on her stomach. D) with her parachute open.
In an interference pattern, the wavelength and frequency are
a. the same in both the regions of constructive interference and the regions of destructive interference. b. greater in regions of constructive interference than in regions of destructive interference. c. smaller in regions of constructive interference than in regions of destructive interference. d. unchanged in regions of destructive interference but greater in regions of constructive interference. e. unchanged in regions of destructive interference but smaller in regions of constructive interference.
What primary wavelength and corresponding photon energy is emitted by a body at:
(a) 400.°C? (b) 800.°C? (c) 1200.°C?
Two identical balls have the same amount of charge, but the charge on ball A is positive and the charge on ball B is negative. The balls are placed on a smooth, level, frictionless table whose top is an insulator. Which of the following is true?
a. Since the force on A is equal but opposite to the force on B, they will not move. b. They will move together with constant acceleration. c. Since the force on both balls is negative, they will move in the negative direction. d. None of the above is correct.