How does a refrigerator differ from a heat pump? I. A refrigerator can be used as an air conditioner while a heat pump cannot. II. The refrigerator is used to cool down while a heat pump is used to heat up. II. The COP of a refrigerator is greater than 1 while that of a heat pump is less than 1. A. I only

How does a refrigerator differ from a heat pump? I. A refrigerator can be used as an air conditioner while a heat pump cannot. II. The refrigerator is used to cool down while a heat pump is used to heat up. II. The COP of a refrigerator is greater than 1 while that of a heat pump is less than 1. A. I only

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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please answer and provide an explanation. thank you!A cup of water is scooped up from a swimming pool of water. Compare the temperature Tand the internal energy U of the water, in both the cup and the swimming pool. a. None of the choices d. TPool is greater than TCup, and the U is the same. b. TPool is equal to TCup, and UPool is greater than UCup. e. TPool is less than TCup, and the U is the same. c. TPool is equal to TCup, and UPool is less than UCup.
Consider two objects, A and B, which has different temperatures. Also assume that A is hotter then B. What does the 0th law of thermodynamics say about this situation? a. It says that B must be transferring heat to A. b. It says that A must be transferring heat to B. c. The zeroth law of thermodynamics does not apply to this situation. d. It says that A and B are in thermodynamic equilibrium. e. It says that A and B are *not* in thermodynamics equilibrium.
An aircraft engine takes in 8900 JJ of heat and discards 6700 JJ each cycle. Part A. What is the mechanical work output of the engine during one cycle? Part B. What is the thermal efficiency of the engine? Express your answer as a percentage.
Over the course of a day, 4.0 kg of water evaporates from the leaves of a corn plant.a. How much energy is required to evaporate the water? (Assume that the temperature of the leaves is 30°C.)b. If the plant is active for 12 hours, how much power does this correspond to? You can think of this as the necessary power to drive transport in the plant.
during a cycle, an engine draws 3.50 x 10^3 j of energy from a hot reservoir and releases 2.25 x 10^3 of energy to a cold reservoir. a. how much work does the engine do in one cycle b. calculate the efficiency of the engine
A NATO base in northern Norway is warmed with a heat pump that uses 7.0°C ocean water as the cold reservoir. Heat extracted from the ocean water warms fluid to 80°C; this warmed fluid is used to heat the building. When the system is working at full capacity, 2000 kW of heat are delivered to the building at the cost of 600 kW of electrie energy. a. What is the actual coefficient of performance of the system? b. What is the theoretical maximum coefficient of performance of the system? а.
em 5 A NATO base in northern Norway is warmed with a heat pump that uses 7.0°C ocean water as the cold reservoir, Heat extracted from the ocean water warms fluid to 80° C; this warmed fluid is used to heat the building When the system is working at full capacity, 2000 kW of heat are delivered to the building at the cost of 600 kW of electric energy. Part A What is the actual coefficient of performance of the system? COP Submit Request Answer Part B What is the theoretical maximum coefficient of performance of the system? COPX Submit Request Answar P Type here to search
An ideal gas undergoes two thermodynamic processes as shown in FIGURE 1. a. Name the processes AB and BC. b. If the initial temperature is 40°C, find the temperatures at B and C. c. Find the total work done d. What is the total change in internal energy for these processes
Which of the following is true about an adiabatic process? Select all those apply. I. It occurs at a constant temperature (AT =0). II. There is no transfer/ exchange of heat (Q = 0) in this process. III. The pressure remains constant. IV. The volume remains constant. V. The adiabatic curve is steeper than the isothermal curve in PV diagram. VI. The isothermal curve is steeper than the adiabatic curve in PV diagram. Answer choices: A. I, II, and V B. I, II, and V C. I, III, and IV D. Il and V E. Il and VI
2. A steel marble at room temperature is placed in a plastic-foam cup containing ice and water at OC. After thermal equilibrium is reached, the temperature of the ice-water mixture and marble is OXC.
A California geothermal power plant generates 4.3 MW by extracting 24 MW of heat from an underground source at 108°C and then discharging waste heat into the 17°C air.a. What is the actual efficiency of the plant?b. What is the theoretical efficiency?
0. A/ How much energy will be absorbed by 24% heat engine in order to perform 6J of work? B/ How much energy is rejected to the cold reservoir?