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3 cards from this section. Quick, good the night before a test.
What does the coefficient of linear expansion (α) represent?
Think about how materials behave when heated.
Write down the formula for linear expansion.
Remember the variables involved in the change of length.
What is the formula for calculating linear expansion?
Recall the variables in the linear expansion equation.
The coefficient of linear expansion is dependent on the material being used.
Think about how different substances respond to heating.
A 6 m copper wire experiences a temperature change of 75°C. The coefficient of linear expansion for copper is 1.7 x 10⁻⁵ °C⁻¹. What is the final length of the copper wire?
Use the linear expansion formula with the given values.
A material in construction expands by 0.025 m when the temperature rises by 40°C. If its original length is 5 m, calculate the coefficient of linear expansion.
Use the rearranged formula to solve for α.
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