A copper phone wire has essentially no snag between poles 35m apart on a winter day when the temperature is −20oC. How much longer is the wire on a summer day when Tc = 35oC? (For copper α = 1.70 × 10−51/K.)
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A copper phone wire has essentially no snag between poles 35m apart on a winter day when the temperature is −20oC. How much longer is the wire on a summer day when Tc = 35oC? (For copper α = 1.70 × 10−51/K.)
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