A volume of helium gas has a temperature of 0°C. The same gas twice as hot has a temperature of
A) 0°C.
B) 2°C.
C) 100°C.
D) 273°C.
E) none of the above
Answer: D
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Given that a force vector extends from the origin to (120 N, -60.0 N), find the magnitude of the vector.
A. 140 N B. 134 N C. 180 N D. 60.0 N
In a shuffleboard game, the puck slides a total of before coming to rest. If the coefficient of kinetic friction between the puck and the horizontal board is 0.28, what was the initial speed of the puck?
A) 8.1 m/s B) 29.0 m/s C) 6.5 m/s D) 7.3 m/s
According to most scientists, when did the first hominids--direct human forbears that were fully separated from the apes--appear on Earth?
A) a few billion years ago B) a few thousand years ago C) about a billion years ago D) a few million years ago E) about 100 billion years ago
A 60.0-Hz AC generator with a peak voltage of 110 V drives a series RL circuit with R = 10.0 ? and L = 10.0 mH. The impedance is
a. 3.77 ?. b. 9.26 ?. c. 10.0 ?. d. 10.7 ?. e. 13.8 ?.