You Want to Design an Ideal Carnot Heat Engine That

question 21

Multiple Choice

You want to design an ideal Carnot heat engine that wastes only 35.0% of the heat that goes into it. The lowest cold-reservoir temperature available to you is +15.0°C. If 150.0 J of work is done per cycle, the heat input per cycle is closest to

• A) 203 J
• B) 231 J
• C) 248 J
• D) 429 J
• E) 760 J

---

Definitions:

Cuticle

A protective and waxy or hard layer covering the epidermis of plants, invertebrates, or other organisms.

Mesophyll

The inner tissue of a leaf, containing many chloroplasts where photosynthesis occurs.

Photosynthesis

The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water, generating oxygen as a byproduct.

Carbon Dioxide

This gas, which has no color and no smell, is generated when carbon and organic substances burn and through the act of respiration. It is a natural component of the air and is utilized by plants for photosynthesis.