20. Heat and Temperature
Linear Thermal Expansion
10:54 minutes
Problem 17.91
Textbook Question
Textbook QuestionA copper wire sags 54.0 cm between two utility poles 30.0 m apart when the temperature is -15° C . Estimate the amount of sag when the temperature is + 35° C . [Hint: An estimate can be made by assuming the shape of the wire is approximately an arc of a circle; hard equations can sometimes be solved by guessing values.]
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