A heat engine takes 457 J of energy from a hot reservoir and dumps 225 J of energy to its cold reservoir. What is the efficiency of this heat engine?

University Physics Volume 2
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Chapter3: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 1CQ: Consider these scenarios and state whether work is done by the system on the environment (SE) or by...
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Question 6
A heat engine takes 457 J of energy from a hot
reservoir and dumps 225 J of energy to its cold
reservoir. What is the efficiency of this heat engine?
O 41
O 51
O.69
O 14
O 17
Question 7
A pressure of 200 KPa is equivalent to which of the
following?
O 200,000 N/cm^2
O 2,000 N/cm^2
20 N/cm^2
O 0.2 N/cm^2
0.02 N/cm^2
Transcribed Image Text:Question 6 A heat engine takes 457 J of energy from a hot reservoir and dumps 225 J of energy to its cold reservoir. What is the efficiency of this heat engine? O 41 O 51 O.69 O 14 O 17 Question 7 A pressure of 200 KPa is equivalent to which of the following? O 200,000 N/cm^2 O 2,000 N/cm^2 20 N/cm^2 O 0.2 N/cm^2 0.02 N/cm^2
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