An ideal gas is allowed to expand slowly at constant temperature to twice its original volume. During the expansion, the gas absorbs 200 kJ of heat
(a) What is the change in the internal (thermal) energy of the gas during the expansion? (b) How much work does the gas do during the expansion?
(a) zero (b) 200 kJ
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To pluck a nucleon from a nucleus requires
A) work. B) kinetic energy. C) potential energy. D) none of the above
When droplets of condensation form on the outside of a glass of ice water, it must be that in the air right next to the glass
a. the temperature is near the dew point. b. the humidity is near the saturation density. c. the relative humidity is near 100%. d. all of the above
A sample of water that is 99.9999 percent pure contains 0.0001 percent impurities. Consider from Chapter 1 that a glass of water contains on the order of a trillion trillion (1 × Image) molecules
If 0.0001 percent of these molecules were the molecules of some impurity, about how many impurity molecules would this be? A) 1000 (one thousand: 1 × Image) B) 1,000,000 (one million: 1 × Image) C) 1,000,000,000 (one billion: 1 × Image) D) 1,000,000,000,000,000,000 (one million trillion: 1 × Image)
How deep under the surface of a lake would the pressure be triple that at the surface? (1 atm = 1.01 × 10^5 Pa)
a. 1.00 m c. 10.3 m b. 9.80 m d. 20.6 m