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A material of unknown composition with an initial length of 2.9 m is found to expand by 0.37 mm when it is heated by 15 K. What is the coefficient of thermal expansion of this material? K-1

  • physics -

    (0.37 mm)/[(2900 mm)*15K] = 8.5*10^-6 K^-1

    Note that the expansion amount and the original length have to have the same dimesions. I used millimeters.

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