As a gasoline engine is running, the amount of gasoline containing 15,000J of chemical potential energy is burned in 1 s. During that second, the engine does 3,000J of work. The burning gasoline has a temperature of about 2500 K. The waste heat from the engine flows into the air at about 300 K. What is the Carnot efficiency of a heat engine operating between these two temperatures?

Q: A coal power plant consumes 100,000 kg of coal per hour and produces 500 MW of power. If the heat of…

A:

Q: "A heat engine accepts 200 J of heat from a hot reservoir, does work, and releases 160 J to a cold…

A: Given  Heat taken Q1 = 200 J  Heat given to sink Q2 = 169 J

Q: A typical electric refrigerator has a power rating of 600 W, which is the rate (in J/s) at which…

A: Given: The power rating of the refrigerator is 600 W. The heat released into the room is 1000 W.…

Q: A heat engine extracts 55 kJ from the hot reservoir and exhausts 40 kJ into the cold reservoir. What…

A: a) The thermal efficiency of a heat engine is given by, Considers the conservation of energy,

Q: What is the efficiency of a heat engine that uses an input heat of 6.70 x 104 J and rejects 3.28 x…

A:

Q: A separate engine operates with a hot reservoir temperature of 600 K and a cold reservoir…

A: Given  T1 =600 K And T2=300 K   Find the maximum efficiency.

Q: The steam supplied to an engine liberates 5000 J of heat. If the engine efficiency is only 40…

A:

Q: gasoline engine is running, an amount of gasoline containing 11,700 J of chemical potential energy…

A: Efficiency =W/Q

Q: The motor in a refrigerator has a power of 200W. If the freezing compartment is at 270 K and the…

A:

Q: As a gasoline engine is running, an amount of gasoline containing 16,000 J of chemical potential…

A: The work done by the engine, W=4000 J   The input chemical energy, Einput=16000 J

Q: A NATO base in northern Norway is warmed with a heat pump that uses 7.0°C ocean water as the cold…

A:

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

A:

Q: A heat engine operates between a reservoir at 28°C and one at 439°C. What is the maximum efficiency…

A: Tcold = 28 Degree Celsius  = 28 + 273  = 301 K Thot = 439 degree celsius  = 439 + 273  = 712 K

Q: As a gasoline engine is running, an amount of gasoline containing 11,100 J of chemical potential…

A: Given Data: The input energy is: Qi=11100 J The output energy is: Qo=3700 J

Q: A steam engines raises a 1800 kg mass vertically at the rate of 9 m/s. What is the power of the…

A: mass raised (m) = 1800 kg velocity (v) = 9 m/s efficiency = 70 %

Q: How long in minutes will the energy in an 862 kJ (206 kcal) cup of yogurt last in a woman doing work…

A: Given Data: The energy stored in Yogurt is, E=862 kJ The power is, P=110 W The efficiency of a woman…

Q: The surface of the Sun is approximately at = 700 K, and the temperature of the Earth’s surface is…

A:

Q: A heat engine having an efficiency of 0.20 takes in 2000 J of energy from the hot reservoir in one…

A:

Q: A typical temperature for surface water in a tropical ocean is 27°C. Whereas at a depth of a…

A: Thot = 27 o C = 27 + 273  = 300 K Tcold = 5 o C = 5 + 273  = 278 K Using formula for efficiency : η…

Q: As a gasoline engine is running, an amount of gasoline containing 15,200 J of chemical potential…

A:

Q: A Carnot heat engine has an efficiency of 0.700. If it operates between a deep lake with a constant…

A:

Q: As a gasoline engine is running, an amount of gasoline containing 16,000 J of chemical potential…

A:

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: It has been proposed to use the thermal gradient of the ocean to drive a heat engine. Suppose that…

A: Given: The temperature at the surface of the ocean is 22 degrees Celcius. The temperature on the…

Q: A heat engine takes 457 J of energy from a hot reservoir and dumps 225 J of energy to its cold…

A:

Q: If a heat engine performs 200 J or work while absorbing 1000 J of heat energy from the hot…

A: Given data The work performed by the heat engine is given as W = 200 J. The heat absorbed by the…

Q: As a gasoline engine is running, an amount of gasoline containing 18,500 J of chemical potential…

A: (a) The engine's efficiency is η=work doneEnergy input×100%=3700 J18500 J×100%=20%

Q: Consider an inefficient engine that draws 200 J of heat from a hot reservoir at 100o C, converts 48…

A:

Q: What is the change in entropy of 500 grams of steam at 110 degrees Celsius when it is condensed to…

A: Mass of steam = 500 gram = 0.5 kg. Temperature = 110°C Total heat required = Latent heat of…

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: If you have to climb eight stories at a height of 24 m above ground level. Then the extra calories…

A:

Q: If a heat engine pulls 8330.0 J of heat from the hot reservoir and exhausts 6938.9 J of heat to the…

A:

Q: A refrigerator with a performance factor of 1/3 works between two heat reservoirs at if (oK 350) and…

A: Performance factor  β = 1/3 T1  = 350 K T2 = 200 K Heat absorbed from cold reservoir Q2 = 500 J Heat…

Q: A Carnot engine performs work at the rate of 450 kW while using 950 kcal of heat per second. If the…

A:

Q: A heat engine operating between energy reservoirs at 20°C and 600°C has 30% of the maximum possible…

A:

Q: A heat engine does 4.6 × 107 J of work when supplied 8.9 × 107 J. What is its efficiency?

A: The efficiency be given as, Where, W be defined as work. Q be defined as the heat supplied.

Q: A Carnot engine performs work at the rate of 490 kW while using 890 kcal of heat per second. If the…

A:

Q: A Carnot heat engine has an efficiency of 0.600. If it operates between a deep lake with a constant…

A:

Q: A heat engine does 8.1 × 107 J of work when supplied 10.9 × 107 J. What is its efficiency?

A:

Q: A thermodynamic process occurs in which the entropy of a system changes by -8 J/K. According to the…

A: We know that the entropy of the universe can not decrease . As the entropy of the system decreases…

Q: A heat engine operates between a reservoir at 27°C and one at 374°C. What is the maximum efficiency…

A: Given : Tc = 27°C = 27 + 273 = 300 K TH = 374°C = 374 + 273 = 647 K