Please help: Carnot cycle
I'm trying to study for my physics test and I need help.
The problem is "A carnot engine operates with a cold reservoir temperature of 194 K and has an efficiency of 74.3 %. (A) What is the temperature of the hot reservoir? (B) If the engine does 8.99*10^4 J of net work during each cycle, how much heat does it absorb form the hot reservoir during a cycle?
I took the efficiency equation e=1-Tc/ Th and got 755 K for the first part of the equation, but I cannot seem to get the second part. Any suggestions??
How do you find out how much heat is absorbed by the hot reservoir during a cycle?
The problem is "A carnot engine operates with a cold reservoir temperature of 194 K and has an efficiency of 74.3 %. (A) What is the temperature of the hot reservoir? (B) If the engine does 8.99*10^4 J of net work during each cycle, how much heat does it absorb form the hot reservoir during a cycle?
I took the efficiency equation e=1-Tc/ Th and got 755 K for the first part of the equation, but I cannot seem to get the second part. Any suggestions??
How do you find out how much heat is absorbed by the hot reservoir during a cycle?
Replies
-
sharon09Efficiency also equals to Wnet/Qh . Plug in the values n u will get the answer. -
shubhrajeet tiwalet source temp beT THEN
EFFECIENCY ={{T-194}/T}=.743
THIS GIVE VALUE OF T
NOW
AS W =8.99^4
WHICH IS EQUAL TO Q1-Q2
THERFORE
W/Q1=EFFICENCY
THIS GIVES Q1
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