You wish to measure, approximately, the thermal conductivity of polyethylene (PE). To do so you block one end of a PE pipe with a wall thickness of and diameter of 30 mm and fill it withboiling 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 seconds after filling the inside with water. Use this information, plus data for specific heat and density  of PE from Appendix A, Tables A2 and A5, to estimate for PE. How does your result compare with the listed value in TableA7?

Data From Appendix Table A2

Data From Appendix A5

Data From Table A7 

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x=3 mm