12. The volume of a gas is changed along the curved line between A andB in the drawing. Do not assume that the curved line is an isotherm or thatthe gas is ideal. (a) Find the magnitude of the work for the process, and(b) determine whether the work is positive or negative.2.0 x 104 PaVolume2.0 x 10-3 m3Pressure

The area under the graph will give use the work done in the process Area of one square…

Answered: 12. The volume of a gas is changed…

University Physics Volume 2

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Chapter3: The First Law Of Thermodynamics

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Problem 29P: (a) Calculate the work done by the gas along the closed path shown below. The curved section between...

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Unreasonable Results (a) How many moles per cubic meter of an ideal gas are there at a pressure of 1.001014N/m2 and at 0C ? (b) What is unreasonable about this result? (c) Which premise or assumption is responsible?
Under what circumstances would you expect a gas to behave significantly differently than predicted by the ideal gas law?
A hand—driven tire pump has a piston with a 2.50cm diameter and a maximum stroke of 30.0 cm. (a) How much work do you do in one stroke if the average gauge pressure is 2.40105N/m2 (about 35 psi)? (b) What average force do you exert on the piston, neglecting friction and gravitational force?
What is the net work output of a heat engine that follows path ABBA in the figure above, with a straight line from B to D? Why is the work output less than for path ABCDA? Explicitly show how you follow the steps in the Problem Solving Strategies for Thermodynamics.
There is no change in the internal of an ideal gas undergoing an isothermal process since the internal energy depends only on the temperature. Is it therefore correct to say that an isothermal process is the same as an adiabatic process for an ideal gas? Explain your answer. `
In a cylinder of an automobile engine, immediately after combustion the gas is confined to a volume of 50.0 cm3 and has an initial pressure of 3.00 106 Pa. The piston moves outward to a final volume of 300 cm3, and the gas expands without energy transfer by heat, (a) What is the final pressure of the gas? (b) How much work is done by the gas in expanding?
(a) Calculate the work done by the gas along the closed path shown below. The curved section between R and S is semicircular. (b) If the process is carried out in the opposite direction, what is the work done by the gas?
Consider these scenarios and state whether work is done by the system on the environment (SE) or by the environment on the system (ES): (a) opening a carbonated beverage; (b) filling a flat tire; (c) a sealed empty gas can expands on a hot day, bowing out the walls.
18. The pressure and volume of a gas in the figure below are changed along the path ABCA. B 5.0 x 10 1.0 x 105 2.0 x 103 5.0x 10-3 Volume, m3 Using the data shown in the graph, determine the work done (including the algebraic sign) in each segment of the path: a. A to B, b. B to C, and c. C to A. [0], -1500 J, +900 J] Pressure, Pa
7. Write the formula for the computation of work if it is isobaric. 8. If the gas (system) is expanding, is the work positive or negative? 9. If heat is absorbed by the system, is q positive? 10. What is the conversion factor between Latm and joule?
Problem 11. (Cyclic Process) Two moles of an ideal gas is taken through the cyclic process A B C D A as shown. P (KPW) G 1.25 D V(m²) A. Calculate the work done on the gas during process AB. Express your answer in units of k). B. Calculate the work done on the gas during process BC. Express your answer in units of k). C. Calculate the work done on the gas during process CD. Express your answer in units of kl. D. Calculate the work done on the gas during process DA. Express your answer in units of kl..
12.WA.002. MY NOTES ASK YOUR TEACHER The volume and pressure of a gas are 6.00 m³ and 2.1 atm respectively. (a) If this gas expands to twice its initial volume while the pressure is constant, determine the work done on the gas. (b) On the other hand, if this gas is compressed to two-thirds its initial volume while the pressure is constant, determine the work done on the gas.

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