Steel rails 240 m long are laid end to end with gaps, Physics

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Steel rails 240 m long are laid end to end with gaps

Steel rails 24.0 m long are laid end to end with gaps between them to account for thermal expansion.

Part A. If the track is laid when it's 15 ^oC, how large should the gaps be to allow temperatures up to 35 ^oC? Express your answer to two significant figures and include the appropriate units.

Part B. If the track is laid using the gaps you found in part (a), how large will the gaps be on a -21 ^oC winter morning? Express your answer to two significant figures and include the appropriate units.

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Physics: Steel rails 240 m long are laid end to end with gaps

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Physics: Steel rails 240 m long are laid end to end with gaps

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