A System Is Acted on by Its Surroundings in Such

question 59

Multiple Choice

A system is acted on by its surroundings in such a way that it receives 50 J of heat while simultaneously doing 20 J of work.What is its net change in internal energy?

• A)70 J
• B)30 J
• C)zero
• D)-30 J

---

Definitions:

Brachium

Refers to the upper arm area, specifically the portion between the shoulder and the elbow.

Esophageal Arteries

Arteries that supply blood to the esophagus.

Subscapular Artery

A blood vessel that supplies blood to the scapula area, including the shoulder blade and surrounding muscles.

Popliteal Vein

A vein located behind the knee that drains blood from the lower leg into the femoral vein.