A heat engine with a thermal efficiency of 45 percent rejects 500 kJ/kg of heat. How much heat does it receive?

Q: On a cold day, a heat pump absorbs heat from the outside air at -10°C and transfers it into a home…

A: Given  Outside temperature TL=-100 C=273-10=263K Home temperature TH=300 C=273+30=303K

Q: What condition is necessary for flow of heat?

A: The factor or condition that is necessary for heat transfer to occur is that two object 'must have…

Q: In doing 15000 J of work, an engine rejects 9000 J of heat. What is the efficiency of the engine

A: The efficiency of the engine is, e=ww+Q

Q: If a large pan of soup and a small bowl of soup have the same temperature, what do you know about…

A:

Q: In a thermal engine the heat received from the heater is 900J, while what is given to the cooler is…

A:

Q: Which law of thermodynamics would be violated if heat were tospontaneously flow between two objects…

A: Second law

Q: the internal energy of system increased by 25 j while 100 j of heat was added to it. what is work…

A: Given: The change in the internal energy is 25 J. The heat added is 100 J.

Q: The internal energy of water is higher than that of steam at 100°C.

A: Internal energy of water By First law of Thermodynamics ∆U=∆Q+∆WHere The workdone is zero  The…

Q: A heat pump with a COP of 2.5 supplies ener gy to a house at a rate of 60,000 Btu/h. Determine (a)…

A: a) The COP is given by,

Q: A locomotive travelling at a constant speed of 8.89m/s runs on a steam engine with a power…

A: speed of locomotive v = 8.89 m/s power dissipated P = 5019542.9 W efficiency  e = 0.14

Q: A heat engine receives heat from a heat source at 1200°C and has a thermal efficiency of 40 percent.…

A:

Q: A car running using a heat engine does 3.9 × 107 J of work. If the heat engine is 89 percent…

A: Efficiency can be expressed as

Q: The highest possible efficiency of an engine operating between temperatures of 11 oC and 215 K is

A:

Q: What is the difference between Thermal Energy and Heat Energy?

A: Thermal energy is the energy stored due to temperature of a body. It is a stored form of energy,…

Q: In a thermodynamic process, 20 Joules are removed from a system as heat, and 30 Joules are added as…

A: The 1st law of thermodynamics implies the conservation of energy. It states that for a system in…

Q: If the gas in a container absorbs 275 joules of heat, has 125 joules of work done on it, and then…

A:

Q: What is a heat pump?

A: Heat pump is a device that is used for transfer of heat in and out of the system. When it's cold…

Q: A process in which no energy is transferred by heat between a system and its surrounding, is called?

A:

Q: A heat engine operates with sink temperature 25° with the efficiency of 30%. By how many kelvins…

A: Given, here Temperature of Heat sink is TC and initial and final efficiencies are denoted as η1 and…

Q: Internal energy of a system increases by 60 J when 140 J of heat is added to the gaseous system. The…

A: Given : Heat added (dQ) = 140 J Energy change(dU) = 60 J

Q: A thermodynamic process that happens very quickly tends to be:

A: A thermodynamic process that happens very quickly tends to be which process.

Q: 250 J of heat leaves the system and 355.75 J of work is done on the system. Get the change of…

A: Given value--- 250 J of heat leaves the system . 355.75 J of work is done on the system. We have…

Q: An ideal gas absorbs 437 J of heat from its environment and does 831 J of work on the environment.…

A: The given values are,

Q: When thermal energy is removed from a system, what happens to temperature and the average kinetic…

A: Temperature is a measure of average kinetic energy of the molecules of the system. As the…

Q: Is there a distinction between thermal energy and internal energy?

A:

Q: Does adding heat to a system always increase its internal energy?

A:

Q: A machine absorbed 500 J of heat and delivered 600 J of work. How much of internal energy of the…

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Q: If 30 kJ of heat flows out of a system, while 15 kJ of work is done on the system, what is the…

A: Here heat flows out of a system, so q = -30 kJ, and work done on the system is 15kJ.

Q: How much heat is needed to produce 13 J of energy from a heat engine with an efficiency of 0.3? 3.9…

A:

Q: What is the third law of thermodynamics?

A: The third law of thermodynamics states that the entropy of a perfect crystal approaches zero at a…

Q: 35. A heat engine functions with 70.7 percent thermal efficiency and consumes 12.0 kJ from heat…

A: Given: Heat engine functions with 70.7% thermal efficiency It consumes 12.0 kJ Efficiency is raised…

Q: Does human body follow laws of thermodynamics?

A: Yes, it completely does. An example of the same is when you are sitting in a crowded room, you tend…

Q: How much heat must be supplied to the engine per second?

A: Answer for  Part A : 616666 J/s Part B: 77699916 J  Explanation is in next step :

Q: What is meant by thermodynamics?

A:

Q: A 10-kg crate starts with a speed of v = 14.3 m/sec at the bottom of a rough incline. If it rises h…

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Q: What is the relationship between heat added to a system, change in its internal energy, and external…

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Q: Is the efficiency of a heat engine more in hilly areas than in the plains?

A: Heat engine is a device which performs work by taking heat from a hot source and rejecting heat to…

Q: What happens to the efficiency of a heat engine when the temperature of a reservoir into which…

A: Efficiency of heat engine can be given as:

Q: The process of heat radiation is the ONLY method of heat transfer that can occur under water.…

A: The process of heat radiation is the ONLY method of heat transfer that can occur through space.

Q: The natural direction of heat flow between two reservoirs depends on

A: Heat is defined as the transfer of energy between two objects or in simple words energy tied up in…

Q: A nail made of iron and a bowl of water have the same temperature because they are on the same table…

A: