Comparing the speed of sound in liquids, gases, and solids, the speed of sound is usually lowest in _____ and highest in _____
a. solids, liquids
c. liquids, solids
b. gases, liquids
d. gases, solids
D
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A 8.0-?F uncharged capacitor is connected in series with a 6.0-k? resistor, an ideal 20-V dc source, and an open switch. If the switch is closed at time t = 0.0 s, what is the charge on the capacitor at t = 9.0 ms?
A) 0 C B) 37% of the minimum charge C) 68% of the minimum charge D) 96% of the maximum charge E) 17% of the maximum charge
Which of the following has virtually no effect on the structure of a planet?
A) its composition B) its size C) its magnetic field D) its mass
Which metric prefix means one thousand?
a. milli- b. centi- c. one- d. kilo- e. mega-
What do the size and shape of Widmanstätten patters indicate?
a. the age of the meteorite b. that the molten metal of the meteorite cooled very slowly c. the metallic content of the core of the meteorite d. the origination of the meteorite e. the number of organic compounds found within the meteorite