Imagine a piston containing a sample of ideal gas in thermal equilibrium with a large water bath. Assume that the piston head is perfectly free to move unless locked in place, and the walls of the piston readily allow the transfer of energy via heat unless wrapped in insulation. The piston head is unlocked and the gas is in an equilibrium state. For each of the actions described below, state whether the work W done on the gas, the heat energy Q transferred to the gas, and the change in the internal energy AEth of the gas are positive (+), nega -), or zero (0) After each action the piston is reset to its initial equilibrium state. Throughout this item we will assume that the first law of thermodynamics is given by AEth=W+Q ▾ Part A Action: Lock the piston head in place. Hold the piston above a very hot flame. Enter the signs of W, Q, and AEth Use +,-, or 0 separated by commas. For example, if Wis positive, Q is negative, and AEth is zero, you would type +,-,0. ▸ View Available Hint(s) Submit ▾ Part B Action: Very slowly push the piston head down. Keep the piston is in constant thermal equilibrium with a large water bath. Enter the signs of W, Q, and AEth Use +,-, or 0 separated by commas. For example, if W is positive, Q is negative, and AEth is zero, you would type +,-,0. ▸ View Available Hint(s)
Imagine a piston containing a sample of ideal gas in thermal equilibrium with a large water bath. Assume that the piston head is perfectly free to move unless locked in place, and the walls of the piston readily allow the transfer of energy via heat unless wrapped in insulation. The piston head is unlocked and the gas is in an equilibrium state. For each of the actions described below, state whether the work W done on the gas, the heat energy Q transferred to the gas, and the change in the internal energy AEth of the gas are positive (+), nega -), or zero (0) After each action the piston is reset to its initial equilibrium state. Throughout this item we will assume that the first law of thermodynamics is given by AEth=W+Q ▾ Part A Action: Lock the piston head in place. Hold the piston above a very hot flame. Enter the signs of W, Q, and AEth Use +,-, or 0 separated by commas. For example, if Wis positive, Q is negative, and AEth is zero, you would type +,-,0. ▸ View Available Hint(s) Submit ▾ Part B Action: Very slowly push the piston head down. Keep the piston is in constant thermal equilibrium with a large water bath. Enter the signs of W, Q, and AEth Use +,-, or 0 separated by commas. For example, if W is positive, Q is negative, and AEth is zero, you would type +,-,0. ▸ View Available Hint(s)
Chapter3: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 60P: An amount of n moles of a monatomic ideal gas in a conducting container with a movable piston is...
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Transcribed Image Text:Part C
Action: Lock the piston head in place. Plunge the piston into very cold water.
Enter the signs of W, Q, and AEth Use +, -, or 0 separated by commas. For example, if W is positive, Q is negative, and AEth is zero, you would type +, -,0.
► View Available Hint(s)
Submit
Transcribed Image Text:Imagine a piston containing a sample of ideal gas in thermal equilibrium with a large
water bath. Assume that the piston head is perfectly free to move unless locked in place,
and the walls of the piston readily allow the transfer of energy via heat unless wrapped in
insulation. The piston head is unlocked and the gas is in an equilibrium state.
For each of the actions described below, state whether the work W done on the gas, the heat energy Q transferred to the gas, and the change in the internal energy AEth of the gas are positive (+), negative (
-), or zero (0).
After each action the piston is reset to its initial equilibrium state.
Throughout this item we will assume that the first law of thermodynamics is given by AEth = W+Q.
Part A
Action: Lock the piston head in place. Hold the piston above a very hot flame.
Enter the signs of W, Q, and AEth Use +, -, or 0 separated by commas. For example, if W is positive, Q is negative, and AEth is zero, you would type +, -,0.
► View Available Hint(s)
Submit
Part B
Action: Very slowly push the piston head down. Keep the piston is in constant thermal equilibrium with a large water bath.
Enter the signs of W, Q, and AEth Use +, -, or 0 separated by commas. For example, if W is positive, Q is negative, and AEth is zero, you would type +, -,0.
► View Available Hint(s)
Submit
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Transcribed Image Text:Action: Wrap the piston in insulation. Pull the piston head up.
Enter the signs of W, Q, and AEth Use +, -, or 0 separated by commas. For example, if W is positive, Q is negative, and AEth is zero, you would type +, -,0.
► View Available Hint(s)
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