A steel container, equipped with a piston, contains 21 mol of an ideal gas at 465 K. The container is compressed isothermally to 90% of its original volume. How much work is done on the gas? The ideal gas constant is R = 8.314 J/mol ? K
A) 8600 J B) -73,300 J C) 11 J D) -8500 J
A
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According to modern scientific dating techniques, approximately how long ago did Earth and the other planets of our solar system form?
A) 4.5 billion years B) 10,000 years C) 4.5 million years D) 14 billion years
A Carnot engine is operated between a hot and a cold reservoir. The temperature difference between the two reservoirs is 284°C. If the efficiency of this ideal engine is 24.0%, find the temperature of the cold reservoir in °C
What will be an ideal response?
A steam engine is operating at its theoretical maximum efficiency of 60%. If the waste heat has a temperature of 100°F (38°C), what is the temperature of the boiler?
a. 350°C b. 94°C c. 225°C d. 504°C e. 775°C
RMS and Peak Quantities: The potential applied to a 20-? resistor is (60 V) cos(33t). What is the average power consumed in the resistor?
Fill in the blank(s) with the appropriate word(s).