A refrigerator is rated at 370 Watt. What is the maximum amount of heat it can remove in 1 min if the inside of the refrigerator is 0°C and it exhausts into a room at 20°C. If the COP of the refrigerator is 70% of that of an ideal heat pump, how much heat can it remove in 1 min?
Q: Problem 4: A freezer has a coefficient of performance of 3.5. You place 0.25 kg of water at 33°C in…
A: GivenC.O.P=3.5 Mass of water, m=0.25 kgInitial Temperature of water, Ti=33°CFinal temperature of…
Q: 100 mL of water at 20.0 °C is placed in the freezer compartment of a refrigerator with a coefficient…
A:
Q: The ice maker inside a refrigerator makes ice cubes at 0.0°C from water that is at 17.2°C when it…
A: Given data The temperature of the water is Tw=17.2°C. The temperature of the ice is Ti=0°C. The…
Q: What is the change in internal energy of a system that takes in 3.33 106 J of heat, and does 4.50…
A: According to the first law of thermodynamics,∆U=Q-W.......(1)Where,∆U is the change in internal…
Q: A piston-cylinder assembly contains 0.7 lb of air initially at a pressure of 30 lbf/in² and a…
A: Given: Let us consider the given data, Air's mass, m=0.7 lb Initial pressure, P1=30 lbfin2 Final…
Q: A system gains 2990 J of heat at a constant pressure of 1.23 × 105 Pa, and its internal energy…
A:
Q: During a high fever, a 55.0 kg patient’s normal metabolism increases by 11.2%. This results in an…
A: Given that:m=55.0 kgMetabolism with fever is 11.2% greater. H=20.0 mAt normal, Qc=120 kJ
Q: Air under pressure of 100 kPa at 280 K enters the compressor and is stably compressed to 600 kPa and…
A:
Q: A gasoline engine takes in 1.61×104 J of heat and delivers 3700 J of work per cycle. The heat is…
A:
Q: An ideal heat pump does 400 J of work to keep the temperature in a dorm room at 20◦ C by dumping…
A:
Q: Work of 3000 J is done on an ideal gas, but the internal energy raises only 1600 J. What is the…
A:
Q: If the plant operates at 50.0% of its maximum efficiency and its power output is 1.23 × 108 W, at…
A: The given data are: TH=540 KTL=313 KQH=1.23×108 W Here, TH is the higher temperature, TL is the…
Q: A system does 137 J of work on its environment and gains 95.3 J of heat in the process. Find the…
A: The work done by the system on the environment,
Q: You are boiling water in a pot on the stove for your tea. Being the brilliant scientist you are, you…
A: Given. The 0.1 kg of water in a pot is boiling at 100 degrees celsius. In the process of boiling the…
Q: If a carnot engine operates between 35 degrees celcius to 76 degrees celcius. What is its thermal…
A:
Q: A system gains 3080 J of heat at a constant pressure of 1.28 × 105 Pa, and its internal energy…
A:
Q: A steam-electric power plant delivers 900 MW of electric power. The surplus heat is exhausted into a…
A: The amount of heat exhausted into the river can be calculated using the equation,
Q: An electrical power plant is constructed to extract energy from the ocean. It utilizes warm water at…
A: Solution: Given: t1 = temperature of warm water = 30oC t2 = temperature of cold water = 4.1oC η1 =…
Q: If an engine operates between 269°C and 26°C, what is its maximum thermodynamic efficiency (as a…
A:
Q: A system gains 3310 J of heat at a constant pressure of 1.38 × 105 Pa, and its internal energy…
A: Write the given values with suitable variables.
Q: A gas is compressed inside a cylinder with an average force of 40 N acts to move the piston 0.20 m.…
A:
Q: A Carnot's refrigerator takes heat from water at 0°C and discards it to a room at 27°C. If 1 kg of…
A: The objective of the question is to find out the amount of heat discarded to the room, the work done…
Q: A steam engine is operating at its theoretical maximum efficiency of 48%. If the waste heat has a…
A: Given data: The maximum efficiency is η=48% The temperature of the waste heat is T1=31°C+273=304 K…
Q: A furnace supplies 36.0 kW of thermal power at 230 C to an engine that exhausts waste energy at 20.0…
A:
Q: A heat engine takes in 2500J and does 1500J of work. a) How much energy is expelled as waste?…
A: Given Data: The heat supplied to the engine is: Qs=2500 J The work produced by the engine is: W=1500…
Q: Two engines operate between the same two temperatures of 787 K and 385 K, and have the same rate of…
A: Given, Power output of one engine, P1 = 23.0 kW efficiency of second engine, η2 = 42.0% Two engines…
Q: A system with a piston expands when it gives off 51.9J of heat to the surroundings. The piston is…
A:
Q: While constant total pressure = 4.5 atm, an ideal gas grows from 500ml to 900ml. After, the heat…
A: Work done at constant pressure W = P∆V work done at constant volume W=0 because change in volume is…
Q: A gas at 0.75 atm with a volume of 21.7 L undergoes a quasi-static isobaric expansion. If during…
A: Given:- A gas has a pressure P = 0.75 atm The volume of the gas is V = 21.7 L The gas undergoes…
Q: A closed gas system has 682 J of heat gain from the environment and 439 J of work is done on the gas…
A: Given data Q=+682 JW=-439 J
Q: In a process of an ideal gas, the pressure is halved while the volume is kept constant. During this…
A: An ideal gas Pressure is halved, Volume is kept constant, Heat flow,
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- 5. (a) How much heat transfer occurs to the environment by an electrical power station that uses1.25 × 10^14 J of heat transfer into the engine with an efficiency of 42.0%? (b) What is the ratioof heat transfer to the environment to work output? (c) How much work is done?The water in a deep underground well is used as the cold resevoir of a Carnot heat pump that maintains the temperature of a house at 303 K. To deposit 13000 J of heat in the house, the heat pump requires 716 J of work. Determine the temperature of the well water.What is the change in internal energy of a system that takes in 4.53 x 106 ) of heat, and does 4.50 x 105 J of work while dissipating 8.67 x 106 J of heat?
- Two distinct systems have the same amount of stored internal energy. Assume 500 J are added by heat to the first system, and 300 J are added by heat to the second system. What will be the change in internal energy of the first system if it does 200 J of work? How much work will the second system have to do in order to have the same internal energy?A piston-cylinder assembly contains 0.7 lb of air initially at a pressure of 30 lbf/in² and a temperature of 100°F. The air is heated at constant pressure until its volume is doubled. Assume the ideal gas model with constant specific heat ratio, k = 1.4. Determine the work and heat transfer, in Btu.What is the maximum theoretical efficiency possible for an engine operating between 100°C and 400°C?