A Brass Key $\alpha$ = 19 * 10^{-6 $\circ$} C^-1 $\beta$

question 8

Multiple Choice

A brass key ( $\alpha$ = 19 * 10^{-6 $\circ$} C^-1, $\beta$ = 57 * 10^{-6 $\circ$} C^-1) is heated from 20.0 ^$\circ$ C up to 180.0 ^$\circ$ C.If the initial length is 6.00 cm,what is the final length?

• A)6.00 cm
• B)6.02 cm
• C)6.05 cm
• D)6.0547 cm
• E)6.30 cm

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