If the coefficient of performance of the freezer is 4.55, how much heat does the freezer exhaust into your kitchen as a result of freezing the water? Express your answer to three significant figures and include appropriate units. 17 μA 35969 J ? Submit Previous Answers Request Answer X Incorrect: The Again:
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- For the heat pump (used for heating) illustrated below, what is its coefficient of performance for heating. Ag? The gas is monatomic. p(Pa) 6 A. 8/3 B. 2 C. 11/3 D. 14/3 E. 19/7 2 V(m³) 34QUESTION 16 The temperature at state A is 20.0°C, that is 293 K. During the last test, you have found the temperature at state D is 73.0 K and n = 164 moles for this monatomic ideal gas. What is the change in thermal energy for process A to D, in MJ (MegaJoules)? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. p (atm) 5 4 3 2 1 0 A D 1 2 3 4 B 5 → V (m³)What is the coefficient of performance of an ideal heat pump that has heat transfer from a cold temperature of -23.0°C to a hot temperature of 42.0°C?
- The temperature at state A is 20.0°C, that is 293 K. During the last test, you have found the temperature at state D is 73.0 K and n = 164 moles for this monatomic ideal gas. What is the change in thermal energy for process A to D, in MJ (MegaJoules)? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. P (atm) 4 3 ID B +V (m) 4 5A heat engine has 216 J of thermal energy as input and 167 J of thermal energy at output. What is its efficiency in percentage? Round to the first decimal placeWhen 2.1 kg of water at 12.3 °C is mixed with 3.7 kg of water at 39.7 °C in a well-insulated container, what is the change in entropy of the system? Part A Make an estimate. Express your answer to two significant figures and include the appropriate units. HÁ ? AS = Value Units Submit Request Answer Part B Use the integral AS = [dQ/T. Express your answer to two significant figures and include the appropriate units. HA AS = Value Units Submit Request Answer
- A heat engine does 30.0 J of work and exhausts 35.0 J of waste heat during each cycle. Part A What is the engine's thermal efficiency? Express your answer as a percentage. 46.2 % Submit Correct Part B Previous Answers If the cold-reservoir temperature is 30.0 °C, what is the minimum possible temperature in °C of the hot reservoir? Express your answer in degrees Celsius. —| ΑΣΦ 383.35 ? °C1 kg of air is reversibly heated at constant pressure from an initial state of 300 K and 1 bar until its volume increases to three times its initial value. Determine the internal energy changes, entapy, and heat and work requirements for this process. The molar mass of air is 28.9 g / mol. Write down all your assumptions made. w= dU= dH= Q=The coefficient of performance of a refrigerator is 5. If the temperature of the room is 301K, what is the lowest possible temperature that can obtained insides the refrigerator ? a) - 44.2°C b) 22.2°C c) - 22.2°C