Adiabatic Processes: A monatomic ideal gas at an initial temperature of 390 K is compressed adiabatically from an initial volume of 120 L to a final volume of 40.0 L. What is the final temperature of the gas?
A. 124 K
B. 811 K
C. 610 K
D. 775 K
E. 820 K
Answer: B
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Radioactive Decay: Rutherfordium-261 has a half-life of 1.08 min. How long will it take for a sample of rutherfordium to lose one-third of its nuclei?
A. 1.02 min B. 1.62 min C. 0.632 min D. 2.70 min E. 3.24 min
In a supermarket, you place a 5 lb (22.3 N) bag of oranges on a scale. The scale starts to oscillate at 2.70 Hz. What is the force constant of the scale?
A) 654 N/m B) 602 N/m C) 327 N/m D) 819 N/m E) 409 N/m
According to updated models of the formation of the Solar System, Earth's early atmosphere probably consisted mostly of:
A) hydrogen, ammonia, and methane. B) neon, argon, and radon. C) butane, ethane, and hexane. D) carbon dioxide, nitrogen, and water vapor.
What would happen in the Sun if the temperature of the core decreased?
A) The fusion rate increases, then the core expands and cools. B) The fusion rate increases, then the core shrinks and heats. C) The fusion rate decreases, then the core shrinks and heats. D) The fusion rate decreases, then the core expands and heats.