48 Go As a gas is held within a closed chamber, it passes through the cycle shown in Fig. 18-41. Determine the energy transferred by the system as heat during constant-pressure process CA if the energy added as heat QAB during constant-volume process AB is 20.0 J, no energy is transferred as heat during adiabatic process BC, and the net work done during the cycle 'C Volume is 15.0 J. Figure 18-41 Problem 48. Pressure

48 Go As a gas is held within a closed chamber, it passes through the cycle shown in Fig. 18-41. Determine the energy transferred by the system as heat during constant-pressure process CA if the energy added as heat QAB during constant-volume process AB is 20.0 J, no energy is transferred as heat during adiabatic process BC, and the net work done during the cycle 'C Volume is 15.0 J. Figure 18-41 Problem 48. Pressure

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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10.-What is the heat of the isothermal process (from point B to point C)?
50 GOA lab sample of gas is taken p through cycle abca shown in the p-V diagram of Fig. 18-43. The net work done is +1.2 J. Along path ab, the change in the internal energy is +3.0 J and the magnitude of the work done is 5.0 J. Along path ca, the energy trans- ferred to the gas as heat is +2.5 J. How much energy is transferred as heat along (a) path ab and (b) path bc? a b -V Figure 18-43 Problem 50.
(a) For the atmosphere, write down an expression for the first law of thermodynamics for an adiabatic process. (b) Write down an expression for change of internal energy of a system in a constant-volume (isosteric) process. (c) Determine the specific internal energy change and the work done during an isosteric cooling from 0°C to -10°C. (d)Determine the pressure level attained when a system expands adiabatically in the atmosphere from 1000 mb and temperature falls from 0°C to -10°C.
9.-What is the change in internal energy of the isochoric process (from point A to point B)?
In an adiabatic process for an ideal gas, the pressure decreases. In this process does the internal energy of the gas increase or decrease? Explain.
(i) the temperature of T1 and T2. (ii)the work done by the gas along the path QM.
Correction: "There is an adiabatic expansion to point B"
9b
The gas cycled as shown. Calculate the heat supplied to the gas during the process C-A when QA-B = 20.0 J is the heat supplied during the process A-B, the process B-C is adiabatic and the total work done by the gas done during the cycle is 15.0 J?
20-2 An ideal gas undergoes the thermodynamic process shown in the PV 2P. diagram in the figure. Determine whether each of the values (a) AU, (b)W, (c)Q for the gas is positive, negative, or zero. (Note that Wis the work done on the gas.) Hint: First use the ideal gas law to find the initial and final temperatures in terms of Po and Vo and determine if the final temperature is greater than, less than, or equal to the initial temperature. AU? W? Q? V₂₂ 2V₂
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