A heat engine with an efficiency of 40% does 800J of work,each cycle.how much heat per cycle is lost to the surrounding?
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Explanation:
Given : For Carnot engine,
⇒T
1
=600K T
2
=300K
⇒W=800J
We know,
Efficiency (n)=1−
T
1
T
2
=
Q
W
⇒
Q
W
=1−
600
300
⇒Q=
1−
2
1
W
⇒
2
1
800
⇒Q=1600J
i.e, heat given to system is 1600J.
Hence, the answer is 1600.
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