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physics

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NOTE: the formula for converting the
CHANGE in temperature is NOT the same
as simply converting the temperature!
A bridge is made with segments of concrete 81 m long (at the original temperature). If the linear expansion coefficient is 1.2 × 10−5(◦C)−1, how much spacing is needed to allow for expansion for an increase in temperature of 61◦F?
Answer in units of cm

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