You use a quantity of fuel with a total energy content of 19.02 MJ to power an engine. If the average output of the engine over 2 hours was 2.12 kW,  what is the efficiency of the engine?

Q: 170 g of water at 105°C is converted to steam. What is the entropy change of the water that is now…

A: latent heat of boiling water = 2256 KJ/kg  = 2256 J/g mass = 170 g Heat required to change the state…

Q: An engine with an output of 249.0 W has an efficiency of 25.0 %. It works at 10.00 cycles/s. How…

A: It is given that the output power is 249.0W. It is the work done per second. This implies, 249.0 J…

Q: Let two t ́machines be connected in s ́erie such that the heat released by the first t ́machine is…

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Q: Exactly 367 grams of ice are melted at a temperature of 55°C (Lịce-333 J/g ). Find the change in…

A: Solution,  Given that,  Temperature T = 55° C = 55 +273 = 328 K Heat Q= 330×367 J We know that, the…

Q: A system's "entropy" is (a) the amount of work the system can do. (b) the amount of microscopic work…

A: Since entropy is a measure of randomness, so when a system has large number of microscopic quantity…

Q: The second law of thermodynamics states that the entropy of an isolated system not in equilibrium…

A: The objective of the question is to verify the statement about the second law of thermodynamics and…

Q: discards

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Q: A freezer has a coefficient of performance of 6.30. It is advertised as using 376 kWh/yr. Note: One…

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Q: In each cycle of its operation, a heat engine expels 2,900 J of energy and performs 1,600 J of…

A: energy expelled = 2900 J work done = 1600 J a) thermal energy that must be added to engine in each…

Q: heat engine operates between a hot reservoir at 790°C and a cold reservoir at a temperature of 15…

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Q: Fifty grams of water at 0 °C is changed into vapor at 100 °C. What is the change in entropy of the…

A: The change in entropy of water can be given as The change in entropy of water transforming in to…

Q: In each cycle of its operation, a heat engine expels 5,900 J of energy and performs 1,700 J of…

A: The amount of heat released or expelled by the engine, Qreleased = 5900 J The amount of work done by…

Q: In one cycle, a heat engine takes in 1160 J of heat from a high-temperature reservoir and releases…

A: A heat engine is a thermodynamic-engine based on the second law of thermodynamics. The heat engine…

Q: The latent heat of vaporization of water is given approximately by L₁ = -2,400Tc + 2,500,000, where…

A: Solution: We have given that The latent heat of vaporization of water Lv=-2400Tc + 25,00,000 where…

Q: Suppose a heat engine is connected to two energy reservoirs, one a pool of molten aluminum (660°C)…

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Q: 1. A coal-fired power plant produces 9.00 × 1013 J of electrical energy in one day, and operates…

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Q: An engine uses 20% of the energy supplied for its operation. Indicates whether each of the…

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Q: In each cycle of its operation, a heat engine expels 2,500 J of energy and performs 1,900 J of…

A:

Q: A freezer has a coefficient of performance of 6.30. The freezer is advertised as using 495 kW-h/y.…

A: Given : Coefficient of Performance, COP = 6.3  Power, P = 495 Kw-h/y  Specific heat of water,…

Q: If the temperature inside the fridge is 35°F and the temperature outside is 70°F what is the maximum…

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Q: bring about a 7.7 J/K increase in the entropy

A: The amount of energy that would have to be transferred to a room temperature environment to bring…

Q: A power plant has been proposed that would make use of the temperature gradient in the ocean. The…

A: Given:-               A power plant has been proposed that would make use of the temperature…

Q: An engine operates at 66.8% the maximum (Carnot) efficiency.  It has a cold reservoir at 651 K and a…

A: Given, The engine operates at 66.8% the maximum (Carnot) efficiency cold reservoir temp T1=651 K hot…

Q: A truck mass of m=1210kg drives up an incline at a constant speed of v = 12.7 m/s. The forces of air…

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Q: Suppose you spend 30.0 minutes on a stairclimbing machine, climbing at a rate of 90.0 steps per…

A: The efficiency of the machine is

Q: The temperature at the surface of the Sun is approximately 5,450 K, and the temperature at the…

A: The temperature of the Sun Ts = 5450 K The temperature of the Earth Te = 291 K   Energy transferred…

Q: 170 g of water at 105°C is converted to steam. What is the entropy change of the water that is now…

A: The expression for find change in entropy is ∆s=mLvT

Q: A certain coal-fired power plant has a rated power capacity of P = 850 MW. The output of this plant…

A: Given that :- Power capacity , P=850 MW  Output , W=0.26Q11

Q: If 100 J of heat is added to a system so that the final temperature of the system is 400 K, what is…

A: Given: 100J of heat added to the system             Q = 100J             change in temperature is…

Q: On a cold day, 17400 J of heat leaks out of a house. The inside temperature is 24.0° C, and the…

A: Given Data: The amount of heat leaks is, Q=17400 J The inside temperature of the house is, Th=24°C…

Q: A real (non-Carnot) heat engine, operating between heat reservoirs at temperatures of 524 and 287…

A: given data 2.4kJ of net work 3.6kJ of heat tempratures are 524k and 287k thermal efficiency = ?

Q: True or False? The second law of thermodynamics states that it is possible to have 100% efficiency…

A: Defiination of efficiency:-        Efficiency of an engine is defined as  percentage of total heat…

Q: The average electricity consumption of a house in Gainesville is known to be 1,036 kWh in a month…

A: Given that: E=1036 kWh in monthAverage output power per day, Pav=1036 kWh30 day=34.53…

Q: A certain coal-fired power plant has a rated power capacity of P = 1350 MW. The output of this plant…

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Q: As a gasoline engine is running, an amount of gasoline containing 15,000J of chemical potential…

A: Given value--- amount of gasoline containing 15,000J of chemical potential energy is burned in 1 s.…

Q: You are hired to build a geothermal power plant that absorbs heat from a hot water spring and…

A: The temperature of the surrounding air in kelvin is, Tc=17+273 K=290 K The efficiency of the Carnot…

Q: A‭ ‬heat‭ ‬pump‭ ‬has‭ ‬a‭ ‬coefficient‭ ‬of‭ ‬performance‭ ‬3.0‭.‭ ‬How‭ ‬much‭ ‬heat‭ ‬is‭…

A: Coefficient of performance of heat pump, COP = 3.0 Heat removed from the cold reservoir, Qc = 300…

Q: r. Similarly, a person can be viewed as a heat engine that takes an input of internal energy, uses…

A: Given:- Suppose a trained athlete can function as a heat engine with an efficiency of 0.16. The…

Q: You are working on a summer job at a company that designs non-traditional energy systems. The…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for…