You Want to Insert an Aluminum Rod, Which at 20°C

question 53

Multiple Choice

You want to insert an aluminum rod, which at 20°C has a radius of 1.000200 cm into a copper tube which has a radius of 1.000100 cm at the same temperature. You decide to put both of them in the refrigerator. At what temperature will the rod just fit if both are cooled to the same temperature? The coefficient of thermal expansion for aluminum is 2.4 × 10^-5 K^-1, and that of copper is 1.7 × 10-5 K^-1.

• A) 7.8°C
• B) 6.3°C
• C) 9.2°C
• D) 15°C
• E) 5.7°C

---

Definitions:

Spermatic Artery

A blood vessel that supplies blood to the testis and the ductus deferens.

Spermatic Vein

A vein draining blood from the testicle to the inferior vena cava or the left renal vein, involved in the temperature regulation of the testes.

Vagina

The muscular tube leading from the external genitals to the cervix of the uterus in women and most female mammals.

Meeting Effectively

Refers to strategies and techniques used to ensure meetings are productive, inclusive, and lead to actionable outcomes.