Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Textbook Question
Chapter 27.1, Problem 2bTH
A long pin is used to hold the piston in place as shown in the diagram. The cylinder is then placed into boiling water.
b. Sketch this process in the PV diagram at right.
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pin
6. A long pin is now used to hold the piston in place as shown in the
diagram. The cylinder is then placed into boiling water. The valve
remains closed for the whole time.
a. Does the temperature of the gas increase, decrease, or
remain the same?
b. Sketch this process in the PV diagram. Using arrow, indicate the direction of the
process on your graph.
c. Explain why for this particular situation, it is impossible to determine the pressure of
the gas as you did on question 1 (that is, by considering the free-body-diagram of
the piston).
Referring to the figure shown, water contained in a piston–cylinder assembly, initially at 100 kPa and 25°C. The water is heated until the final temperature reaches to 320°C. Kinetic and potential energy effects are negligible.Sketch the process on T-v diagram.
Determinea. The quality of the mixture when piston hits the stop.b. The final pressure.Hint: Establish the problem in three states; 1: initial, 2: when piston hits the stop, 3: at T3 = 320°C.
Efficiency: You haven’t been to the grocery store in a while, and all you can find in yourapartment is a few packets of ‘Ramen’ noodles.
a. Calculate how much energy would be needed to raise the two cups of water you needto cook your noodles to its boiling point.
b. List the sources of inefficiency associated with boiling this water in an electric kettle,and find values for or estimate efficiency values for each energy conversion. Trace backas far as your assumed electricity source.
c. How does the situation change if you heat the water on a gas stove? What inefficienciesare avoided, and what are introduced? Estimate (rough estimates are fine, but state your assumptions clearly) the total amount of gas needed to cook your meal.
Chapter 27 Solutions
Tutorials in Introductory Physics
Ch. 27.1 - Prob. 1aTHCh. 27.1 - In this process, which of the quantities P, V, n,...Ch. 27.1 - Consider the following incorrect student...Ch. 27.1 - Explain why it is not possible to use the ideal...Ch. 27.1 - A long pin is used to hold the piston in place as...Ch. 27.1 - A long pin is used to hold the piston in place as...Ch. 27.1 - Prob. 2cTHCh. 27.2 - Prob. 1aTHCh. 27.2 - Prob. 1bTHCh. 27.2 - Prob. 1cTH
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- 13 moles of monatomic ideal gas undergoes a thermodynamic process from point a topoint c, as shown by the PV diagram in Figure 1. i) Determine the work done ON the gas from point a to point c ii) Find the temperature of the gas at point barrow_forwardShown below are bar charts for processes involving ideal gasses. For each, draw the appropriate line or curve on the PV graph, including an arrow for direction. Explain. 1. Temperature Pressure Volume bul IF IF I F 2. Temperature Pressure Volume T I FI FI F 4. I F IF I F P Temperature Pressure Volume 7 G I FI FI F P 3. For this, use the ideal gas law as a guide: Temperature Pressure Volume P V P V Varrow_forwardAnswer the following questions about the PV diagram shown below. Please refer to the picture. Question A: How much work is performed in the process AB? Please give the answer in joules Question B: How much work is performed in the process BD? Please give the answer in joules Question C: How much work is peformed in the process AC? Please give the answer in joulesarrow_forward
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