PHY107 - Multiple Choice Kinetics and Thermodynamics

PHY107 - Multiple Choice Kinetics and Thermodynamics - APB...

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APB – Multiple Choice Practice Questions Heat Kinetics and Thermodynamics 1) Which of the following could NOT be used to indicate a temperature change? A change in: A) color of a metal rod B) length of a liquid column C) pressure of a gas at constant volume D) electrical resistance E) mass of one mole of gas at constant pressure 2) A mass m of helium gas is in a container of constant volume V. It is initially at pressure p and absolute (Kelvin) temperature T. Additional Helium is added, bringing the total mass of helium gas to 3m. After this addition, the temperature is found to be 2T. What is the gas pressure? 3) A gas can be taken from state a to state c by two different reversible processes, a à c or a à b à c. During the direct process a à c, 20 J of work are done by the system and 30 J of heat are added to the system. During the process a à b à c, 25 J of heat are added to the system. How much work is done by the system during a à b à c? 4) What temperature change on the Kelvin scale is equivalent to a 10 degree change on the Celsius scale
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5) Which would be the most comfortable temperature for your bath water? A) 0 C B) 40 K C) 110 C D) 310 K E) 560 K 6) The theoretical (Carnot) efficiency of a heat engine operating between 600C and 100C is 7) When an ideal gas is isothermally compressed
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