An ideal Carnot engine operates between a high temperature reservoir at
And a river with water at
If it absorbs
Of heat each cycle,how much work per cycle does it perform?
A)1,642 J
B)2,358 J
C)1,483 J
D)2,517 J

Question

An ideal Carnot engine operates between a high temperature reservoir at 
And a river with water at 
If it absorbs 
Of heat each cycle,how much work per cycle does it perform?
A)1,642 J 
B)2,358 J 
C)1,483 J 
D)2,517 J

Quizplus · Accepted Answer

The efficiency of the Carnot engine is given by: 
efficiency = 1 - T_cold/T_hot  
where T_cold is the temperature of the cold reservoir (water in this case) and T_hot is the temperature of the hot reservoir. 
Using the given temperatures, we have: 
efficiency = 1 - 293/384 = 0.2383 
The work done per cycle is given by: 
work = efficiency * heat absorbed = 0.2383 * 6900 J = 1642 J 
Therefore, the answer is choice A, 1,642 J.

An Ideal Carnot Engine Operates Between a High Temperature Reservoir