If I have a square inch of copper plate 1/8 of an inch thickANDIf I have a square inch of Pyrex glass plate 1/8 of an inch thickAND I apply a flame to one side of each of for 30 seconds.then I turn off the flame to both of themWhich will be the cooler in 10 seconds?The Pyrex or the copper?
copper is the better thermal conductor, so the pyrex will be cooler. thermal conductivity of copper is 401 W/mK thermal conductivity of glass is 1.05 W/mK .