Question

A Carnot heat engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. In five minutes of operation of the engine, the heat rejected by the engine melts 0.0400 kg of ice.During this time, how much work W is performed by the engine?

Answer 1

Answer:

Explanation:

efficiency of Carnot engine

Temp of source - temp of sink  / Temp of source

higher temperature - lower temperature / higher temperature

= 373 - 273 / 373

= 100 / 373

= work output / heat imput

= work output / work output + heat rejected

heat rejected = .04 x 336000

= 13440

so

100 / 373 = W / W + 13440 , W is work output

373W = 100W + 1344000

273W = 1344000

W = 4923 J