5. How long does it take for a 19kW steam engine to do 6.8 x 107) of work?

Q: Suppose that a heat engine does 6000 J of work while the heat input is 9000 J. What is the…

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Q: Suppose a certain heat engine has an efficiency of 25%. In order for this heat engine to do 450 J of…

A: Given data: The efficiency of engine is η=25%=0.25. The work done by engine is W=450 J.

Q: A swimmer does 7.7 * 105J of work and gives off 3.9 * 105J ofheat during a workout. Determine ∆U, W,…

A: By swimming , swimmer losses heat, so Q=-3.9×105 J A swimmer does 7.7×105 J so, W=7.7×105 J

Q: 1. An engine with displacement of 2.0 L develops 270 hp. How many horsepower would be developed by a…

A: 1)Displacement of engine = 2 L Power of engine = 270 hp Displacement of second engine = 1.8 L Power…

Q: According to the World Energy Council, the average household in Mexico consumes about 1600 kWh of…

A: Dimension of solar panels=(1×1)  So area of solar panel=1 m^2 Annual solar energy potential of panel…

Q: An engine, operating with an efficiency of 0.225,  delivers 8.10 ✕ 105 J each minute. What is the…

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Q: What is the efficiency of a heat engine that does 1250 J of work and gives off 5250 J of heat to the…

A: Let the heat given to hot reservoir be QH, the heat given to the cold reservoir be QC, the work done…

Q: An ideal Heat Engine is determined to have an efficiency of 21.7% and a power output of 139kW. How…

A: Write the given values with the suitable variables. η=21.7%=0.217Po=139 kW Here, η and Po are the…

Q: An energy storage system is being designed using a number of concrete blocks and electrically driven…

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Q: A heat engine extracts 45.0 kJ from the hot reservoir and exhausts 40.0 kJ into the cold reservoir.…

A: The work done by heat engine: W=QH-QC Efficiency η=1-QCQH Given QC=40kJ QH=45kJ

Q: Why do we not use brakes with more than 80% efficiency in automobiles? What should be the minimum…

A: we do not use brakes with more than 80% efficiency in automobiles

Q: An 800-MW electric power plant has an efficiency of 30%. It losses its waste heat in large cooling…

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Q: Rub your hands together vigorously. What happens? Discuss the energy transfers and transformations…

A: Hands are felt warm when rubbed. When we rub the hands,hands are having kinetic energy .It is the…

Q: electrical transmission can be converted to internal energy with an efficiency of 100%. By what…

A: Solution

Q: 3. Determine the % efficiency of a four-stroke gasoline engine consumes 93000 J of energy in doing…

A: Given data:  Energy input (Qin) = 93000 J Work done (W) = 31000 J Required: The efficiency in…

Q: A 52-kg package is lifted to the top shelf in a storage bin that is 4 m above the ground floor. How…

A: Given Mass of package is m=52 kg Height from the ground is h=4 m Acceleration due to gravity is…

Q: A bathroom extractor fan being sold on Amazon has a duct diameter of 10.0 cm. It extracts air from a…

A:

Q: A steam power plant with a power output of 150 MW consumes coal at a rate of 60 tons/h. If the…

A: Given:  Output Power,Po = 150 MW = 150 x 106 W rat of coal consumption = 60 tons/h  Heating value of…

Q: he energy entering an electric heater by electrical transmission can be converted to internal energy…

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Q: How much energy in jouls does a (5.14x10^1) W toaster use in the morning if it is in operation for a…

A: Given Information:- Power of the toaster is P=5.14×101 W Time  t=4.000×100 min   =4.000×100 min×60…