The Stanford Linear Accelerator Contains Hundreds of Brass Disks Tightly $\degree$

question 14

Multiple Choice

The Stanford linear accelerator contains hundreds of brass disks tightly fitted into a steel tube (see figure) . The coefficient of linear expansion of the brass is 2.00 *10^-5 per C $\degree$ . The system was assembled by cooling the disks in dry ice (-57 $\degree$ C) to enable them to just slide into the close-fitting tube. If the diameter of a disk is 80.00 mm at 43 $\degree$ C, what is its diameter in the dry ice?

• A) 78.40 mm
• B) 79.68 mm
• C) 80.16 mm
• D) 79.84 mm
• E) none of these

---

Definitions:

Dry Facts

Unembellished and straightforward information.

Solicited Letters

Letters that are requested or expected by the recipient, often involving inquiries, applications, or responses to queries.

Unsolicited Letters

Letters sent without a direct request, often for promotional or informational purposes.

Application Letters

Written or electronic communications submitted to organizations or institutions to express interest in a position, program, or opportunity.