A Brass Cube,10 Cm on a Side,is Raised in Temperature

question 58

Multiple Choice

A brass cube,10 cm on a side,is raised in temperature by 150°C.The coefficient of volume expansion of brass is 57 × 10−⁶/°C.By what percentage is any one of the 10-cm edges increased in length?

• A) 4%
• B) 2.8%
• C) 0.38%
• D) 0.29%

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Definitions:

Economic Profit

A measure of profit that includes recognition of implicit costs (like the cost of equity capital). Economic profit measures the true profitability of decisions.

Savings Account

A deposit account held at a bank or financial institution that pays interest but typically has limited withdrawal options.

Annual Interest

The amount of interest due per year as a percentage of the amount lent, deposited, or borrowed.

Economic Profit

The difference between total revenue and total costs, including both explicit and implicit costs.