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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1.)In a given experiment, we want to study the expansion of a gas from state i to state f by three different paths in the pV diagram. Based on the following figure, where the pressure is indicated in atmospheres and the volume in liters, determine the work done by the gas, in joules: (a) Along the path iaf (b) Along the path if. (c) Along path ibf.
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.
27) Which of the following must be true for a thermodynamic process that starts and ends at the same state? A: The total heat and work for the cycle must both be zero B: The total work equals the heat C: The value of all state functions must be different at the beginning and the end of the process D: The change in internal energy over the whole cycle must equal 0 E: The temperature of the system will be constant throughout the process
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
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
question in photo please
a) Consider a process involving an ideal diatomic gas with n = 3mol, following p = aV, where a = 1 x 105 Pa/m³ is a constant. The gas ex- pands from volume V; = 1 m³ to V; = 4m3. P2 Find the (i) work done on the gas. (ii) heat entering the gas. 1 (iii) change in the internal energy of the gas. b) Now consider the cycle depicted in the figure, involving the same amount of gas as in the previous part. A → B is the process described in the previous subtask, B → C an isochor and C → A an isobar. Additionally, V2/V1 = n = 4 and Vi = 1 m³. Find the Pi 3 i) work done by the gas during one loop of the cycle. V1 V2 V ii) thermal efficiency of the cycle. iii) maximum theoretical efficiency of a Car- not cycle having the same temperature extrema as in this cycle. iv) coefficient of performance of the cycle, if it were used as a refrigerator .