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

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Definitions:

Underlying Data Structure

The specific arrangement or organization of data in memory that supports the implementation and functionality of higher-level data types or structures.

Recursion

Recursion is a programming technique where a function calls itself in order to solve a problem by breaking it down into smaller, more manageable problems.

Stack

A data structure that follows the Last In, First Out (LIFO) principle, where the last element added is the first one to be removed.

Recursive Call

A function call in which the function calls itself within its own definition.