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23. The Second Law of Thermodynamics

The Carnot Cycle

23. The Second Law of Thermodynamics

The Carnot Cycle

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The Carnot Cycle and Maximum Theoretical Efficiency

The Carnot Cycle and Maximum Theoretical Efficiency

Lifting Mass with a Heat Engine

Lifting Mass with a Heat Engine

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Mechanical Engineering Thermodynamics - Lec 7, pt 2 of 3: Carnot Heat Engine

Mechanical Engineering Thermodynamics - Lec 7, pt 2 of 3: Carnot Heat Engine

The Carnot Cycle | Physical Chemistry I | 036

The Carnot Cycle | Physical Chemistry I | 036

Professor Derricotte

Physical Chemistry

Physics - Thermodynamics: (13 of 14) The Carnot Cycle

Physics - Thermodynamics: (13 of 14) The Carnot Cycle

Michel van Biezen

CARNOT CYCLE | Easy and Basic

CARNOT CYCLE | Easy and Basic

Showing 7 of 7 videos

Practice this topic

Multiple Choice

A theoretical heat engine in space could operate between the Sun's 5500°C surface and the –270.3°C temperature of intergalactic space. What would be its maximum theoretical efficiency?

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Multiple Choice

A Carnot engine with an efficiency of 70% is cooled by water at 10°C. What temperature must the hot reservoir be maintained at?

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Multiple Choice

Your friend claims they have a design for a reversible heat engine that can operate between the freezing and boiling temperatures of water that has an efficiency of 30%. Is this possible?

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Multiple Choice

What is the Carnot efficiency of a heat engine operating between a hot reservoir at 300°C and a cold reservoir at 10°C?

Multiple Choice

What is the hot reservoir temperature of a Carnot heat engine that does

120 J

work each cycle while expelling

100 J

300 K

cold reservoir?

Textbook Question

A Carnot heat engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. In 5 minutes of operation, the heat rejected by the engine melts 0.0400 kg of ice. During this time, how much work W is performed by the engine?

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Textbook Question

A Carnot engine is operated between two heat reservoirs at temperatures of 520 K and 300 K. (c) What is the thermal efficiency of the engine?

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Textbook Question

A Carnot engine is operated between two heat reservoirs at temperatures of 520 K and 300 K. (b) How much mechanical work is performed by the engine during each cycle?

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Textbook Question

A Carnot engine is operated between two heat reservoirs at temperatures of 520 K and 300 K. (a) If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it discard to the reservoir at 300 K?

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Textbook Question

Which, if any, of the heat engines in FIGURE EX21.22 violate (a) the first law of thermodynamics or (b) the second law of thermodynamics? Explain.

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Textbook Question

At what cold-reservoir temperature (in ℃) would a Carnot engine with a hot-reservoir temperature of 427℃ have an efficiency of 60%?

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Textbook Question

A Carnot engine whose hot-reservoir temperature is 400℃ has a thermal efficiency of 40%. By how many degrees should the temperature of the cold reservoir be decreased to raise the engine's efficiency to 60%?

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Textbook Question

The engine that powers a crane burns fuel at a flame temperature of 2000℃. It is cooled by 20℃ air. The crane lifts a 2000 kg steel girder 30 m upward. How much heat energy is transferred to the engine by burning fuel if the engine is 40% as efficient as a Carnot engine?

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Textbook Question

A Carnot heat engine operates between reservoirs at 182℃ and 0℃. If the engine extracts 25 J of energy from the hot reservoir per cycle, how many cycles will it take to lift a 10 kg mass a height of 10 m?

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Showing 14 of 14 practice