4) A refrigerator has a coefficient of performance of 4. If the refrigerator absorbs 30 cal of heat from the cold reservoir in each cycle, the heat expelled (in cal) into the heat reservoir is a. 40.5 b. 37.5 c. 36.5 d. 34.5 e. 22.5
Q: A domestic refrigerator sits in a kitchen, switched on, with the refrigerator door wide open. The…
A: To determine the correct statement regarding the situation. Given:The kitchen is an insulated system…
Q: An engine has a hot reservoir that contains 20 MJ of heat energy at 400º c, and a cold reservoir…
A: Given that:QH=20 MJTH=400°CQC=15 MJTC=5°C
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: 13. If a 0.06247 kg ice cube initially at 0.00° C is allowed to melt in a Styrofoam cup holding…
A: mass of ice (m) = 0.06247 kg initial temperature of ice = 0oC mass of water (m') = 0.497 kg Initial…
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…
A:
Q: 4.A ideal heat engine runs between a hot reservoir at 527 C and a cold reservoir at 27 C. 1. Make a…
A:
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: A large block of copper initially at 23.0°C is placed in a vat of hot water (83.3°C). The first 1.40…
A:
Q: 1. A coal-fired power plant produces 9.00 × 1013 J of electrical energy in one day, and operates…
A:
Q: 4. A heat pump delivers heat at a rate of 7.81 kW for 15.0 h. If its coefficient of performance is…
A:
Q: In every cycle of its operation, a Carnot engine takes in 640 J of heat from a reservoir at 380 K…
A: Given, heat taken from reservoir, Q = 640 J temperature of reservoir, TH = 380 K TC = 300 K
Q: Which of the following statements about an ac process is untrue? The change in entrony is zero
A: Given Data : Adiabatic process
Q: A heat engine exhausts 3 200 J of waste heat while performing 1 500 J of useful net work. What is…
A: Second law of thermodynamics
Q: 4. If 80J of heat flow from a 40°C block into a 20°C block, what is the change in entropy of both…
A: One of the blocks is at a temperature of 40o C while the other is at a temperature of 20o C. 80 J of…
Q: A Carnot engine draws heat energy from a hot temperature reservoir at 250°C and deposits heat energy…
A: Given, The temperature of the cold reservoir Tc=110 °C The temperature of the hot reservoir Th=250…
Q: Which of the following processes does not involve a change in entropy?A. An electric heater raises…
A: Entropy change is the measure of change in thermal energy per unit temperature of the system.
Q: A refridgerator consumes a certain amount of electrical energy to operate. In terms of the…
A: A refrigerator operates on a thermodynamic cycle. In that cycle, the refrigerant gas is compressed…
Q: 2. A heat pump cycle whose coefficient of performance is 2.5 delivers energy by heat transfer to a…
A: As per given, The coefficient of performance = 2.5 Energy delivered by heat pump = 20kW
Q: 20. What is the change in entropy of a 3.0 kg ice at 0.0°C after melting is completed? * O A. 12.5…
A:
Q: 12. Which, of the following temperature changes, would show the smallest change in entropy for a pan…
A: We can calculate change in entropy using , ∆s = Cp x lnT2T1 Since Cp is common in all, the change…
Q: 7. A refrigerator operating on the reversed Carnot cycle has a measured work input of 200 kW and…
A:
Q: 1. A certain gasoline engine has an efficiency of 31%. What would the hot reservoir temperature be…
A:
Q: A Carnot engine runs between a hot reservoir at T, and a cold reservoir at T. If one of the…
A: Carnot cycle: It is a theoretical thermodynamic cycle that describes the most efficient way to…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 5. A 4.50-kg block of ice at 0.00℃ falls into the ocean and melts. The average temperature of the ocean is 3.50℃, including all the deep water. By how much does the melting of this ice change the entropy of the world? Does it make it larger or smaller?21. A heat engine would violate the second law of thermodynamics if it * O A. changed all the heat absorbed from the hot reservoir to mechanical work O B. changed all the heat absorbed from the cold reservoir to mechanical work C. has an efficiency of zero O D. was less efficient than a Carnot heat engine O E. A and CIn a SIMPLE Rankine cycle, the steam throttled condition is 8 MPa and 480°C. The steam is then reheated to 2 MPa and 460 °C. If turbine exhaust is 60 °C, determine the following: a. Heat Added b. Turbine Work c. Heat Rejected d. Pump Work e. Net Work f. Efficiency use the given below provided..Not a reheat it is simple rankine
- 101.Calculate the change in entropy a pot of boiling water to which 104 J of energy is added. The water’s temperature is 100℃.A certain refrigerator requires 31.0J of work to remove 150J of heat from its interior. 1. What is the coefficient of performance? 2. How much heat is rejected to the surroundings at 21C? 3. If the refrigerator cycle is reversable, what is the temperature inside the refrigerator?
- 55. A heat engine with a high temp reservoir at 400K has an efficiency of 0.20. What is the max possibletemp of the cold reservoir?Match each of the terms given below with the particular constraints that it implies about a thermodynamic process. isothermal isobaric A. dq = 0 Β. ΔΡ = 0 C. dw = 0 D. AV = 0 isochoric ◆adiabatic E. An = 0 F. AT=0
- If a heat engine works in a Carnot cycle, what happens to its efficiency when the difference in temperature of the hot and cold reservoirs increases? Its efficiency: A. increases. B. decreases. C. becomes zero. D. remains the same.653. What is the decrease in entropy of 25.0 g of water that condenses on a bathroom mirror at a temperature of 35.0° C, assuming no change in temperature and given the latent heat of vaporization to be 2450 kJ/kg?