On a hot day, the lines expand increasing the length hence sagging. While on a cold day , the lines contract and reduce in length making them tight.
chrispohmomanyi answered the question on October 1, 2017 at 07:32
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Temperature °C -263 -233 -203 -173 -143 -113 -83 -53
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(Solved)
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Date posted: September 29, 2017. Answers (1)