Monday
July 28, 2014

Homework Help: Physics (Heat Engines)

Posted by Kate on Saturday, March 6, 2010 at 10:32pm.

21. A heat engine operates in a cycle between temperatures 700 K and 400 K. The heat input to the engine during each cycle is 2800 J. What is the maximum possible work done by the engine in each cycle?

(A) 1200 J
(B) 1600 J
(C) 2100 J
(D) 2800 J
(E) 4400 J

I believe that the answer is E. I just don't know how to prove it. If you could show that would be great. I know that

e = |W|/|Qh|

|Qh| = |W| + |Ql|

e = 1 - |Ql|/|Qh|

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physic II - a carnot heat engine operates between reservoirs at 550K and 300K, ...
physics - A Carnot engine is operated between two heat reservoirs at ...
physics - A Carnot engine is operated between two heat reservoirs at ...
Physics, help! - A heat engine absorbs 126 kcal of heat and exhausts 77 kcal of...
physics - A heat engine absorbs 848 J of energy per cycle from a high-...
thermodynamics - If a carnot engine receives heat from a heat source and ...
Physics - An ideal gas heat engine operates in a Carnot Cycle between ...
Physics - An ideal gas heat engine operates in a Carnot Cycle between ...
phy - An engine absorbs 2000j of heat from a hot reservoir and expels 750j to a ...
physics - A heat engine takes in 840 kJ per cycle from a heat reservoir. which ...

Search
Members