An engine receives 790Jof heat from a hot reservoir and gives off 430Jof heat to
ID: 2154515 • Letter: A
Question
An engine receives 790Jof heat from a hot reservoir and gives off 430Jof heat to a cold reservoir. Part A What is the work done? W= J Part B What is the efficiency of this engine? e= An engine receives 790Jof heat from a hot reservoir and gives off 430Jof heat to a cold reservoir. An engine receives 790Jof heat from a hot reservoir and gives off 430Jof heat to a cold reservoir. An engine receives 790Jof heat from a hot reservoir and gives off 430Jof heat to a cold reservoir. Part A What is the work done? W= J Part B What is the efficiency of this engine? e= Part A What is the work done? W= J Part A What is the work done? W= J W= J W= J Part B What is the efficiency of this engine? e= Part B What is the efficiency of this engine? e= e= e= W= JExplanation / Answer
W = 790-430 = 360
E = 360/790 = 0.455