Consider the following three items
A. 100 g of steam on the Moon
B. 10 g of water on the Earth
C. 20 g of ice floating in water on the Earth
Put these items in order of increasing density:
1.A < B < C
2.A < C < B
3.B < A < C
4.B < C < A
5.C < A < B
6.C < B < A
7.None of the above
8.Impossible to determine
2
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In what way did Galileo improve on the physics of Aristotle?
A) Galileo understood that "natural" (or unforced) motion occurs at constant velocity. B) Galileo understood that energy is always conserved in every physical process. C) Galileo understood that the gravitational force acts between every pair of objects in the universe. D) Galileo understood that a force is needed to keep an object moving at constant velocity. E) Galileo understood that no force is needed to keep an object moving in a circle at constant speed.
A series of ocean waves, each 12.0 m from crest to crest and moving past an observer at a rate of 6.0 waves per second, has what speed?
a. 72 m/s b. 2 m/s c. 6 m/s d. 0.5 m/s
A terrestrial world's lithosphere is
A) a thin layer of rock that lies between the mantle and crust. B) the interior region in which the planet's magnetic field is generated. C) a layer of hot, molten rock encompassing the core and part of the mantle. D) a layer of relatively strong, rigid rock, encompassing the crust and part of the mantle.
A jet plane travels around the world at 2000 mi/hr (894 m/s). Two accurate atomic clocks measure the times of flight, one on board the plane and the second on Earth. If it takes 12 hours to complete the journey, what will the time difference (in ?s) be?
A. 0.75 B. 0.50 C. 0.25 D. 1.0 E. 0.19