The figure (Figure 1)shows the cycle for a heat enginethat uses a gas having y = 1.25. The initialtemperature is T₁- = 300 K, and this engine operatesat 16 cycles per second. What is the power output of the engine?Express your answer with the appropriate units.μÅ?Pout=658WSubmitPrevious Answers Request AnswerX Incorrect; Try Again; 28 attempts remaining

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Answered: The figure (Figure 1)shows the cycle…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter3: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 9CQ: When a gas expands isothermally, it does work. What is the source of energy needed to do this work?

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A series of thermodynamic processes is shown in the pV-Diagram (see figure on the side). In process ab, 150J of heat are added to the system, and in process bd, 600 J of heat are added. Find a) internal energy change in process ab; b) the internal energy change in process abd; and c) the total heat added in process acd.
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Many decisions are made on the basis of the payback period: the time it will take through savings to equal the capital cost of an investment. Acceptable payback times depend upon the business or philosophy one has. For some industries, a payback period is as small as 2 yeas) Suppose you wish to install the extra insulation in the preceding problem. If energy cost $1.00 per million joules and the insulation was $4.00 per square meter, then calculate the simple payback time. Take the average T for the 120-day heating season to be 15.0 .
An ideal gas expands isothermally along AB and does 700 J of work (see below). (a) How much heat does the gas exchange along AB? (b) The gas then expands adiabatically along BC and does 400 J of work. When the gas returns to A along CA, it exhausts 100 J of heat to its surroundings. How much work is done on the gas along this path?
When a gas expands isothermally, it does work. What is the source of energy needed to do this work?
Please answer the following question(s): 1. (a) What is the best coefficient of performance for a refrigerator that cools an environment at -28° C and has heat transfer to another environment at 47 ° C? COP ref (b) How much work must be done for a heat transfer of 4186 kJ from the cold environment? W = kj (c) What is the cost of doing this if the work costs 10.0 cents per 3.6 × 106 J (a kilowatt-hour)? Cost in cents = ✓ (d) How many kJ of heat transfer, Qh occurs into the warm environment? Qh= kj Think about what type of refrigerator might operate between these temperatures. Hint: Use the appropriate formula for a refrigerator which is different from a heat pump.
The pV-diagram in Fig. shows a process abc involving0.450 mol of an ideal gas. (a) What was the temperature of this gasat points a, b, and c? (b) How much work was done by or on the gas inthis process? (c) How much heat had to be added during the process toincrease the internal energy of the gas by 15,000 J?
A heat engine takes in 2500J and does 1500J of work. a) How much energy is expelled as waste? b) What is the efficiency of the engine?
it is so urgent plzzz
In a heat engine, 2.00 mol of a diatomic gas are carried through the cycle ABCDA, shown in Figure. (The PV diagram is not drawn to scale.) The segment AB represents an isothermal expansion, and the segment BC is an adiabatic expansion. The pressure and temperature at A are 5.00 atm and 600 K. The volume at B is twice the volume at A. The pressure at D is 1.00 atm.A) What is the pressure at B?B) What is the temperature at C?C) Find the total work done by the gas in one cycle.
In a heat engine, 2.00 mol of a diatomic gas are carried through the cycle ABCDA, shown in Figure. (The PV diagram is not drawn to scale.) The segment AB represents an isothermal expansion, and the segment BC is an adiabatic expansion. The pressure and temperature at A are 5.00 atm and 600 K. The volume at B is twice the volume at A. The pressure at D is 1.00 atm. A) What is the pressure at B? B) What is the temperature at C? C) Find the total work done by the gas in one cycle.

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