9. A heat engine does 2000 J of work and it loses 6000 J through the exhaust and friction. What is its efficiency? 10. During an adiabatic process, 20 moles of a monatomic ideal gas undergo a temperature change from 450 K to 320 K starting from an initial pressure is 400 kPa. The ideal gas constant is R= 8.314 J/mol. K. How much heat does the gas exchange during this process? a. b. What is the change in the internal (thermal) energy of the gas during this process?

9. A heat engine does 2000 J of work and it loses 6000 J through the exhaust and friction. What is its efficiency? 10. During an adiabatic process, 20 moles of a monatomic ideal gas undergo a temperature change from 450 K to 320 K starting from an initial pressure is 400 kPa. The ideal gas constant is R= 8.314 J/mol. K. How much heat does the gas exchange during this process? a. b. What is the change in the internal (thermal) energy of the gas during this process?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter3: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 94CP: One mole of an ideal monatomic gas occupies a volume of 1.0102 m3 at a pressure of 2.0105 N/m2. (a)...

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