Among the other planets, probably the most likely place to find evidence for life either now or in the past is on
A) Venus
B) Mercury
C) Jupiter
D) Mars
D
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Two beams of coherent light are shining on the same piece of white paper. With respect to the crests and troughs of such waves, darkness will occur on the paper where:
a. the crest from one wave overlaps with the crest from the other. b. the crest from one wave overlaps with the trough from the other. c. the troughs from both waves overlap. d. darkness cannot occur as the two waves are coherent.
The flow of heat in a cold soft drink will be from ______
a. the drink to the ice cubes b. the drink to the outside air c. the drink to the glass d. the ice cubes to the drink
Which of the following expresses the major idea of Hubble's Law?
A) There must have been a Big Bang. B) All galaxies are moving away from us equally fast. C) The more distant a galaxy is from us, the faster it moves away from us. D) The closer a galaxy is to us, the faster it moves away from us. E) More distant galaxies appear younger.
You want to test how the mass of a ball affects its rate of fall. Which of the following ball drop trials (matched mass and drop heights) would best test this question?
A) mass of 0.5 kg, height 20 m/mass of 0.5 kg, height 20 m B) mass of 0.5 kg, height 20 m/mass of 5.0 kg, height 10 m C) mass of 0.5 kg, height 20 m/mass of 5.0 kg, height 20 m D) mass of 0.5 kg, height 20 m/mass of 0.5 kg, height 10 m