Temperature is mainly affected by the
A. molecular motion in a substance.
B. amount of a substance.
C. both of these
D. none of the above
Answer: A
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The power expended when a barbell is raised 2.0 m in 2 s is
A) 1 W. B) 4 W. C) 8 W. D) dependent on the mass of the barbell.
Carbon dioxide reduction, capture and storage systems are currently
A) widely used in power plants that burn oil, natural, gas, and coal. B) not possible with available technology. C) costly and experimental, but promising. D) only available for power plants that burn natural gas.
The mass of an atom of 12C is exactly 12 atomic mass units. Which of the following describes a mole of 12C atoms?
A) a sample which weighs exactly 12 atomic mass units B) a sample which contains 6.02 x 10^23 atoms of 12C C) both a and b D) neither a nor b
Which of the following would be considered a predisposing factor associated with hypothermia?
A. Alcohol use B. Heart disease C. Seizure disorder D. Asthma