In what form does water exist on the Moon?
A) There is water ice in craters near the poles.
B) There are small pools of liquid water just beneath the surface.
C) There are shallow lakes of liquid water in the deepest craters.
D) There is water ice in the bright regions of the lunar maria.
E) There is no water in any form on the Moon.
Answer: A
A) There is water ice in craters near the poles.
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Which of the following will allow you to learn something about a transiting planet's atmospheric composition?
A) Compare spectra obtained before and during an eclipse. B) Look for slight variations in the time between transits. C) Use the Doppler method to study the planet throughout a cycle from one transit to the next. D) Calculate the planet's size, and then use size to infer what its atmospheric composition must be.
What are the two fundamental laws that lie at the heart of quantum mechanics?
A) the uncertainty principle and the exclusion principle B) the absoluteness of the speed of light and the equivalence principle C) the law of conservation of energy and the electromagnetic force law D) the law of conservation of angular momentum and the law of conservation of energy
Transparency of the atmosphere is lowest for radiation of
A) ultraviolet light. B) visible light. C) infrared light.
Identical masses m are attached to identical springs of spring constant k suspended from the ceiling. With both masses hanging in their equilibrium positions, mass A is pulled down 10 cm and released while mass B is pushed up 10 cm and released. Which statement is correct?
a. Mass A will travel a smaller distance to its highest point than mass B will travel to its lowest point. b. Mass A will travel a greater distance to its highest point than mass B will travel to its lowest point. c. Masses A and B will travel equal distances between their highest and lowest points. d. More work was done on mass A by the extending force than on mass B by the compressing force. e. The total work done on mass A by the extending force was equal to the total work done on mass B by the compressing force.