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A Carnot engine whose hot-reservoir temperature is 390 ∘C has a thermal efficiency of 38 %. Part A By how many degrees should the temperature of the cold reservoir be decreased to raise the engine's efficiency to 63 %?
A Carnot engine whose hot-reservoir temperature is 400 ∘C has a thermal efficiency of 45 % . By how many degrees should the temperature of the cold reservoir be decreased to raise the engine's efficiency to 58 % ?
a Carnot engine whore hot reservoir temperature is 370 C has a thermal efficiency 36%. By how many degress should the temperature of the cold reservoir be decreased to raise the engine's effciency to 65%
1. A Carnot engine has a hot reservoir at 250 degrees C, and a a cold reservoir at 25.0 degrees C. What is the efficiency of this engine? A) 10% B) 43% C) 57% D) 90% 2. A heat engine does 50 J of work and dumps 30 J of heat into the cold reservoir. How much heat was absorbed from the hot reservoir? A) 20 J B) 30 J C) 50 J D) 80 J 3. A heat engine...
A Carnot engine has an efficiency of 0.445, and the temperature of its cold reservoir is 434 K. (a) Determine the temperature of its hot reservoir. (b) If 5610 J of heat is rejected to the cold reservoir, what amount of heat is put into the engine?
A Carnot engine whose low-temperature reservoir is at 18.0°C has an efficiency of 21.9%. By how much should the Celsius temperature of the high-temperature reservoir be increased to increase the efficiency to 57.7%?
A Carnot engine has an efficiency of 0.45. The Kelvin temperature of its hot reservoir is quadrupled, and the Kelvin temperature of its cold reservoir is doubled. What is the efficiency that results from these changes?
A Carnot engine operates with an efficiency of 29% when the temperature of its cold reservoir is 295 K. Assuming that the temperature of the hot reservoir remains the same, what must be the temperature of the cold reservoir in order to increase the efficiency to 33%?
An engine has a hot reservoir temperature of 927 K and a cold reservoir temperature of 631 K. The engine operates at four-fifths maximum efficiency. What is the efficiency of the engine?
Chapter 20, Problem 023 A Carnot engine whose low-temperature reservoir is at 11.4°C has an efficiency of 38.2%. By how much should the Celsius temperature of the high-temperature reservoir be increased to increase the efficiency to 52.0%? Number The nunm Click if you would like to Show Work for this question: Open Show Work Units The number of significant digits is set to 3; the tolerance is +/-2% LINK TO TEXT LINK TO SAMPLE PROBLEM LINK TO SAMPLE PROBLEM VIDEO...
A system has the Carnot efficiency of 16% and its cold reservoir is at 18°C. Determine the temperature of the hot reservoir in [°C].