Answered: Sólve the follow A Carnot engine is…

Sólve the follow A Carnot engine is operated between two heat reservoirs at temperatures of 520K and 300K, What is the thermal efficiency of the engine? liff Complete the table below.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter12: The Laws Of Thermodynamics

Section: Chapter Questions

Problem 33P: The work done by an engine equals one-fourth the energy it absorbs from a reservoir. (a) What is its...

See similar textbooks

Similar questions

(a) How much food energy will a man metabolize in the process of doing 35.0 kJ of work with an efficiency of 5.00%? (b) How much heal transfer occurs to the environment to keep his temperature constant? Explicitly show how you follow the steps in the Problem—Solving Strategy for thermodynamics found in Problem-Solving Strategies for Thermodynamics.
(a) What is the best coefficient of performance for a refrigerator that cools an environment at 30.0C and has heat transfer to another environment at 45.0C ? (b) How much work in joules must be done for a heat transfer of 4186 kJ from the cold environment? (c) What is the cost of doing this if the work costs 10.0 cents per 3.60106J (a kilowatthour)? (d) How many kJ of heat transfer occurs into the warm environment? (e) Discuss what type of refrigerator might operate between these temperatures.
A power plant has been proposed that would make use of the temperature gradient in the ocean. The system is to operate between 20.0C (surface water temperature) and 5.00C (water temperature at a depth of about 1 km). (a) What is the maximum efficiency of such a system? (b) If the useful power output of the plant is 75.0 MW, how much energy is absorbed per hour? (c) In view of your answer to part (a), do you think such a system is worthwhile (considering that there is no charge for fuel)?
9. A heat engine does 2000 J of work and it loses 6000 J through the exhaust and friction. What is its efficiency? 10. During an adiabatic process, 20 moles of a monatomic ideal gas undergo a temperature change from 450 K to 320 K starting from an initial pressure is 400 kPa. The ideal gas constant is R= 8.314 J/mol. K. How much heat does the gas exchange during this process? a. b. What is the change in the internal (thermal) energy of the gas during this process?
A certain coal-fired power plant has a rated power capacity of P = 850 MW. The output of this plant is W = 0.26QH, where QH is the energy input as heat from the hot reservoir. a. Write an equation for the efficiency of a heat engine in terms of QH and the heat QC exhausted to a low-temperature reservoir. b. What's the maximum thermal efficiency of the power plant? c. What's the absolute value of the exhausted heat (QC) each second in MJ for the power plant?
thermodynami. P (Pa) A 900 в 600 300 2 V (m) 4 6 2. One mole of a monatomic ideal gas is taken from state A to state B isobarically. a. How much work is done on the gas during the process A→B? b. What is the change in internal energy UA- UB? c. Is heat added or removed from the gas during the process A→B? d. How much heat is added or removed from the gas? The state of the gas is changed from B>C where the pressure drops to 300 Pa without any change in volume and after the gas is compressed to point A isothermally. e. On the diagram below show the complete cycle A→B→C→A. P (Pa) A 900 B 600 300 2 4 V (m³) b a V 3 An ideal gas can be taken from state a to state c in three different paths: a- har P.
2. An engine takes in 9000 J and does 1700 J of work each cycle while operating at the temperatures of 650°C and 370°C. a. What is the engine’s actual efficiency? b. What is its maximum theoretical efficiency?
An aircraft engine takes in 8900 JJ of heat and discards 6700 JJ each cycle. Part A. What is the mechanical work output of the engine during one cycle? Part B. What is the thermal efficiency of the engine? Express your answer as a percentage.
A heat engine produces 2000 J of work while operating between 210 degrees Celsius and 35 degrees Celsius. a. How much heat (in J; 3 significant figures in scientific notation) is withdrawn from the hot source to produce this much of work? (Format of final answer should be 1.00x10^2) b. Calculate the efficiency of the engine (in percent). c. The root mean square speed of methane is 846 m/s. What is the temperature of the gas (in degrees Celsius)?
A power plant has been proposed that would make use of the temperature gradient in the ocean. They system is to operate between 24.0°C (surface water temperature) and 4.95°C (water temperature at a depth of about 1 km). a. What is the maximum efficiency of such a system? Describe the process that would be used to get this maximum efficiency. b. If the useful power output of the plant is 80.0 MW, how much energy is absorbed per hour?
A certain heat engine operates on the PV diagram below. It contains 3.21mol of a monatomic ideal gas. p (Pa × 105) 2.0 a b 0.010 C ➤ V(m³) O 0.040 a. What temperature is the gas at state c? b. What temperature is the gas at state a? c. How much heat is added/removed from the gas over the path c-to-a? d. What is the pressure of state a? e. What is the temperature of state b? f. Find the work and heat for path a-to-b. g. Find the work and heat of path b-to-c. h. Find the efficiency of the engine. i. Would the engine be more, or less efficient if the gas were diatomic?
An ideal diatomic gas initially has a pressure of 2.00x105Pa, a volume of 4.00 M3, and a temperature of 27 C. It has an isochoric change in pressure to 6.00X105Pa. 1. What are the new volume and temperature? 2. How much work is done to the gas? 3. How much heat is added to the gas? 4. What is the change in the internal energy of the gas?