9.2.2 - Coefficient of Linear Expansion
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Practice Questions
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What does the coefficient of linear expansion (α) represent?
💡 Hint: Think about how materials behave when heated.
Write down the formula for linear expansion.
💡 Hint: Remember the variables involved in the change of length.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for calculating linear expansion?
💡 Hint: Recall the variables in the linear expansion equation.
The coefficient of linear expansion is dependent on the material being used.
💡 Hint: Think about how different substances respond to heating.
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Challenge Problems
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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?
💡 Hint: 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.
💡 Hint: Use the rearranged formula to solve for α.
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