# Converting temperature physics homework help

• Convert at temperature of 335 Kelvin to °C.
• Convert at temperature of 197 Kelvin to °F.
• Convert at temperature of 330 Kelvin to °F.
• Convert at temperature of 32 °C to degrees Fahrenheit.
• Convert at temperature of 1 °C to degrees Fahrenheit.
• Convert at temperature of 699 °C to the Kelvin scale.
• Convert at temperature of 81 °F to degrees Celsius.
• Convert at temperature of 37 °F to degrees Celsius.
• Convert at temperature of -61 °F to the Kelvin Scale.
• 10- Entropy of systems tends to increase.
• 11-A heat engine brings in 636 joules of heat from a heat source with each cycle it goes through. It dumps 595 joules of heat to a heat sink with each cycle. What is the efficiency of the engine? Express the efficiency as a percentage.
• 12-It takes 4.186 joules of heat to raise the temperature of 1.00 gram water by 1.00 degree Celsius. How much heat (in joules) is required to raise the temperature of 550 grams of water by 17 degrees Celsius?
• 13-
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Heat cannot flow from an object at a lower temperature to an object at higher temperature without work being done to make this happen.

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It is impossible to operate a heat engine that brings in heat to produce useful work without dumping off some amount of energy in the form of waste heat.

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Systems tend toward increasing disorder.

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Temperature is a real and measurable property of physical systems and can be used in prediction and analysis.

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The law of conservation of energy.

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The law of thermal equilibrium.

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You can’t win.

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You won’t break even.

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If object A is at a higher temperature than object B and B is at a higher temperature than object C, then A is at a higher temperature than C.

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It is impossible to cool a system down to the absolute zero of temperature.

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ΔU = Q + W

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– A heat engine brings in 525 joules of heat from a heat source with each cycle it goes through. It dumps 475 joules of heat to a heat sink with each cycle. How much work is done by the engine in each cycle?

The latent heat of fusion of water is 334 KJ/kg. How much heat (in kilojoules) is required to melt 14 kilograms of ice?

With each cycle, a heat engine brings in 805 joules of heat from a heat source at a temperature of 1200 Kelvin, dumping 762 joules of heat to a heat sink at 300 Kelvin. How much work is done by the engine in each cycle?

With each cycle, a heat engine brings in 617 joules of heat from a heat source at a temperature of 1,236 Kelvin, dumping 559 joules of heat to a heat sink at 273 Kelvin. What is the efficiency of the engine? Express the efficiency as a percentage.

With each cycle, a heat engine brings in 703 joules of heat from a heat source at a temperature of 1,232 Kelvin, dumping 654 joules of heat to a heat sink at 302 Kelvin. How much work (in joules) is done in a single cycle by the heat engine?

With each cycle, a heat engine brings in 854 joules of heat from a heat source at a temperature of 1,137 Kelvin, dumping 803 joules of heat to a heat sink at 307 Kelvin. What is the greatest possible efficiency such an engine could have? Express this efficiency as a percentage.

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