Question

You decide to use your body as a Carnot heat engine. The operating gas is in a tube with one end in your mouth (where the temperature is 37.0 ∘C) and the other end at the surface of your skin, at 30.0 ∘C.

B) Suppose you want to use this human engine to lift a 2.35 kgkg box from the floor to a tabletop 1.40 mm above the floor. How much must you increase the gravitational potential energy?

C) Suppose you want to use this human engine to lift a 2.35 kgkg box from the floor to a tabletop 1.40 mm above the floor. How much heat input is needed to accomplish this?

D) How many 350 caloriecalorie (those are food calories, remember) candy bars must you eat to lift the box in this way? Recall that 80.0 %% of the food energy goes into heat.

Answer 1

Once check the question...is all units are perfect.

For given question the solution is:-

if in the question it is 1.40 meters means then multiply every answer by 1000.