A Heat Pump Takes in Energy from a 250 K

question 15

Multiple Choice

A heat pump takes in energy from a 250 K thermal reservoir outside a house and discharges 140 J of energy into a 350 K thermal reservoir inside a house. What is the minimum amount of work needed to make the pump work?

• A) 67 J
• B) 50 J
• C) 40 J
• D) 37 J

---

Definitions:

Deep Vein Thrombosis (DVT)

The formation of a blood clot in a deep vein, most often in the legs, which can lead to serious health complications.

Cardiac Surgery

Surgery performed on the heart or blood vessels by cardiac surgeons to correct congenital heart defects, valvular heart diseases, or to perform heart transplantation.

Erythema

A medical term for redness of the skin typically caused by injury or inflammation, which can result from a variety of conditions.

Catecholamines

A group of hormones, including adrenaline and noradrenaline, released in response to stress, affecting heart rate and blood pressure.