The Coefficient of Linear Expansion of Copper Is $17 \times 10 ^ { - 6 } K^{ - 1}$

question 31

Multiple Choice

The coefficient of linear expansion of copper is $17 \times 10 ^ { - 6 } K^{ - 1}$ and that of steel is $12 \times 10 ^ { - 6 } K^{ - 1}$ At $12 ^ { \circ } \mathrm { C }$ a steel rod has a diameter of 2.540 cm and a copper pipe has a diameter of 2.536 cm. Which one of the following quantities is closest to the temperature to which the copper pipe must be heated in order for the unheated steel rod to fit snugly in the copper pipe?

• A) \(143 ^ { \circ } \mathrm { C }\)
• B) \(93 ^ { \circ } \mathrm { C }\)
• C) \(53 ^ { \circ } \mathrm { C }\)
• D) \(105 ^ { \circ } \mathrm { C }\)
• E) \(81 ^ { \circ } \mathrm { C }\)

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Risk-Free Rate

The return expected from an investment that carries no risk of loss.

Expected Return

The mean value of the probability distribution of possible returns for a specific investment or portfolio.

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A version of the Dividend Discount Model that accounts for different growth rates over various stages in a company's lifecycle.

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The return a investor needs on an investment to compensate for the risk of the investment.