A 220-volt 2 ampere electric kettle contains 5 kg. of water at 21° C. It is required to bring it to boiling in 20 minutes. Determíne the efficiency of the kettle.
Q: A gasoline engine absorbs 2.9 kJ of heat and performs 0.7 kJ of mechanical work in each cycle. The…
A: Heat absorbed (Q)= 2.9 KJ = 2.9× 10³ J Work done (W)= 0.7 KJ = 0.7× 10³ J We know that…
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: refrigerator has a coefficient of performance equal to 6.00. The refrigerator takes in 140 J of…
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Q: A heat engine absorbs 1900J of energy from a hot reservoir at 2900C and expels 1400J to the cold…
A: Represent it on diagram for better understanding a) Efficiency of heat engine can be determined as
Q: A heat pump has a coefficient of performance of 3.1. Hint If it requires 290 J of work per…
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Q: An engine absorbs 1.74 kJ from a hot reservoir at 277°C and expels 1.19 kJ to a cold reservoir at…
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Q: It is found that an engine discharges 50 J while absorbing 85 J each cycle of operation. Hint a.…
A: Detailed solution of given question is given in below steps.
Q: 1. An engine with an efficiency of 0.2 absorbs 510 J of heat per cycle. (a) How much work does it…
A: Efficiency of an engine is defined as: Efficiency η=work performedheat absorbed…
Q: A heat pump maintains a dwelling at 68°F. When operating steadily, the power input to the heat pump…
A: Coefficient of performance of heat pump is given by COP=Q1Win Where Q1,Win are heat transferred to…
Q: from a hot reservoir at
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Q: 1. A heat engine is found to have an efficiency of 0.3. If it does 180 J of work per cycle, what are…
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Q: (c) A farm house in a remote area requires on average 280 kWh per week. The average insolation time…
A: (1) Block Diagram of the PV System: PV Modules (32 modules)…
Q: A refrigeration machine rejects QH = 680 Btu per cycle to a hot reservoir at TH = 540°R, while…
A: Given, Heat rejected per cycle by the refrigerator, QH = 680 Btu the temperature of the hot…
Q: 2.A refrigerator has a coefficient of performance equal to 6.00. The refrigerator takes in 110 J of…
A: For a refrigerator Work done is given by W= Q1 - Q2 Q1 is the Heat expelled to the hot reservoir.…
Q: An engine absorbs 1.71 kJ from a hot reservoir at 277°C and expels 1.22 kJ to a cold reservoir at…
A: Given data: The heat absorbed by the engine is Qa=1.71 kJ The temperature of the hot reservoir is…
Q: For an ideal heat engine operating between thermal reservoirs at Th=1000 degree and Tc=110 degree,…
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Q: A diesel engine performs 2,200 J of mechanical work and discards 4,300 J of heat each cycle. How…
A: Given data: Mechanical work done by the diesel engine is, W= 2200 J Heat discard in each cycle is,…
Q: 9. A refrigerator has a coefficient of performance of 3.00. The ice tray compartment is at −20.0℃…
A: Given coefficient of performance(COP) = 3.00 Temperature T1 = −20.0℃ Room temperature…
Q: 1.A heat engine takes in 400 J of energy from a hot reservoir and performs 26.0 J of work in each…
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Q: A heat pump maintains a dwelling at 68°F. When operating steadily, the power input to the heat pump…
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Q: 2. How much work is done by a gasoline engine that is 20 % efficient and loses 750 J to the cooling…
A: The efficiency is defined as: η=WQi 0.2 =…
Q: A heat engine takes in 1800 J of heat from a high temperature reservoir and rejects 1200 J of heat…
A: Answer is Option (a) The expression used to work done by each cycle of engine is W=Qh-Qc Substitute…
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: Solar panels are rated by their theoretical maximum output capacity. A 2-kW PV panel would…
A: There are 10 PV panels each with capacity 260W.Therefore the total power would be
Q: Assume that the turbines at a coal-powered power plant were upgraded resulting in an improvement in…
A: Heat and work are two forms of energy. Heat transfers from high temperature region to low…
Q: A heat engine with an efficiency of 0.45 absorbs 540 J of heat per cycle. a. How much work does it…
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Q: A heat engine is found to have an efficiency of 0.33. If it does 190 J of work per cycle, how much…
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Q: 2.0Kg of water at 0 degree celcius heated to 100 degree celcius. Compute its change in entropy. Mc…
A: Check out the form of chemical
Q: A heat engine takes in 310 J of energy from a hot reservoir and performs 27.0 J of work in each…
A:
Q: The temperature of the cold reservoir of the engine is 310 K. It has an efficiency of 0.23 and…
A: Given: The temperature is T=310 K. The efficiency id n=0.23. The heat absorbs is Q=647 J. Part (a)…
Q: A 100-W lightbulb is placed in a cylinder equipped with a moveable piston. The lightbulb is turned…
A: Power = p = 100 W Time interval = ∆t = 0.015 hour = 0.015 hour×60 min1 hour×60 sec1 min=54 s…
Q: A refrigerator removes heat from a freezing chamber at -8 ⁰F and discharges it at 99 ⁰F. What is its…
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Q: If a refrigerator discards 80 J of heat per cycle and its coefficient of performance is 6.0, what…
A: Given, a refrigerator discards heat, QH = 80 J Coefficient of performance, KR = 6.0 the quantity of…
Q: 1. An engine with an efficiency of 0.2 absorbs 485J of heat per cycle. (a) How much work does it…
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Q: A particular engine has a power output of 2.52 kW and an efficiency of 38.8%. The engine expels 5676…
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Q: A heat engine takes in 400 J of energy from a hot reservoir and performs 21.0 J of work in each…
A: Given: The heat taken by the engine is 400 J. The work performed by the engine is 21 J.
Q: 1. a) A heat engine with an efficiency of 25% does 600 J of work in each cycle. How much heat must…
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Q: A previous part of the question says that the total electrical energy the battery can produce is…
A: The energy content of 1 gallon of gas =1.32×10^8 Joules. So the energy content of 12 gallons of…
Q: A heat pump cycle delivers energy by heat transfer to a dwelling at a rate of 40,000 Btu/h. The…
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Q: Calculate the efficiency of a heat engine operating between two reservoirs at temperatures T₁ = 400…
A: Given, Temprature of hot reservoirs, T1=400 K Temprature of cold reservoirs, T2=300 K
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