The Coefficient of Linear Expansion of the Steel in a Certain

question 9

Multiple Choice

The coefficient of linear expansion of the steel in a certain bridge is 1.10 $\times$ 10^-5/Cº.If at a minimum winter temperature of -30ºC the bridge is 30.5 m long,at the summer maximum of 40ºC its length is increased about

• A)2.54 cm
• B)2.54 mm
• C)0.254 mm
• D)25.4 µm
• E)2.54 µm

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Definitions:

Variable Costs

Costs that vary directly with the level of production output, including expenses like labor and material costs.

Operating Leverage

A financial ratio that measures the degree to which a company can increase operating income by increasing revenue, highlighting the impact of fixed costs.

High Debt

A situation where a company or individual carries a large amount of debt relative to their assets or equity.

Breakeven

The point at which total costs equal total revenue, resulting in neither profit nor loss.