Engineering, 01.09.2020 20:01 ashantajohnson6810
You wish to assess, approximately, the thermal conductivity λ of polyethylene (PE). To do so you block one end of a PE pipe with a wall thickness of x = 3 mm and diameter of 30 mm and fill it with boiling water while clutching the outside with your other hand. You note that the outer surface of the pipe first becomes appreciably hot at a time t ≈ 18 seconds after filling the inside with water. Use this information, plus data for specific heat C p and density rho of PE, to estimateλ for PE. How does your result compare with the listed value in the CES EduPack?
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Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
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You wish to assess, approximately, the thermal conductivity λ of polyethylene (PE). To do so you blo...
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