Consider a string with several rocks tied along its length at equally spaced intervals. You whirl the string overhead so that the rocks follow circular paths. Compared with a rock at the end of the string, a rock at the middle moves
A) half as fast.
B) twice as fast.
C) at the same linear speed.
Answer: A
Physics & Space Science
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The flow of a glacier begins
A) after it has reached a critical mass. B) as pressure is exerted from behind. C) when the accumulating snow begins to melt. D) in the spring.
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Oceans absorb much of the incident solar radiation
What will be an ideal response?
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The fundamental particles that are the building blocks of hadrons are
a. leptons. b. baryons. c. mesons. d. intermediate (or gauge) bosons. e. quarks.
Physics & Space Science
At what temperature is the rms speed of hydrogen molecules, H2, which have a molecular weight of 2.02 g/mole, equal to 2.0 km/s? The Boltzmann constant is 1.38 × 10-23 J/K and NA = 6.022 × 1023 molecules/mol
A) 17°C B) 51°C C) 68°C D) 72°C E) 34°C
Physics & Space Science