32 A Carnot engine is set up to produce a certain work Wper cycle. In each cycle, energy in the form of heat QH istransferred to the working substance of the engine fromthe higher-temperature thermal reservoir, which is at an adjustabletemperature T. The lower-temperature thermal reservoir is main-tained at temperature T = 250 K. Figure 20-28 gives QH for arange of TH. The scale of the vertical axis is set by QH. = 6.0 kJ. IfTH is set at 550 K, what is Qu?%3DQH-250300350Figure 20-28 Problem 32.TH (K)Qu (kJ)

Given: TL = 250 K Scale for vertical axis QHs = 6 kJ = 6000 J TH = 550 K We are asked to find QH for…

Answered: 32 A Carnot engine is set up to produce…

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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2 moles of a diatomic ideal gas undergo the following cyclic process, consisting of an isothermal, isobaric, and an adiabatic process. Given PA 5 atm,Pg = Pc = 1 atm and VA = 2lt. %3D %3D a) Calculate the Volumes VB and Vc. b) Calculate the work WAB, WBc,WCA c) Calculate the Heat QAB, QBC, QCA• pMm)
24
15.
A heat engine operates under the following thermodynamic cycle:A→B: isobaric expansion(P=const.)B→C: isochoric cooling(V=const.)C→A: isothermal compression(T=const.)The engine is operated by nmoles of oxygen, a diatomicgas which behaves like an ideal gas without any appreciable vibrational kinetic energy.The thermodynamic cycle described by the gas is entirely defined by pressures PAand PC, and volume VA. Assume that PC=PA/2and give all your answers in terms of n, R, PAand VA. b)Sketch the cycle on a P-Vdiagram and determine all the unknown pressures, volumes and temperatures. c)Determine the efficiency of this engine, defined by e =Wnet/Qin.Wnetis the net work done by the gas over a full cycle and Qinis the total heat that flows into the gas.Be careful, Qindoes not include the heat released by the gas.
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.
The difference AS=S,- S,between the entropies of two states A and B of a system can be calculated as the integral fdQ/T, counting that: B a. A and B are in the same adiabatic b. A and B are at the same temperature c. The integral is calculated over a reversible path d.The system is thermally insulated e. Friction in the process is disregarded
Based on the figure, what is the heat rejected by the engine in a cycle? P (N/m?) Q, -1.000 joule 900K 450K V (m) O 1000 O 750 250 O 500
12.
Combustion gases enter an adiabatic gas turbine at 1540F and 120 psia and leave at 60 psia with a low velocity. Treating the combustion gases as air and assuming an isentropic efficiency of 82 percent, determine the work output of the turbine.
p (kPa) Он 400 5) The figure shows a pV diagram for a cycle of a heat engine for which Q, = 25 J. What is the thermal efficiency of the engine? 200 (Hint: remember to convert cm³ to m³!) A) 17% B) 34% C) 8.5% D) 64% E) 40% 100 V (em³) 200
statistical physics
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?

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