physics problem
A wire of cross section 1mm^2 and length 2m is stretched through 1 10^-4.Determine the rise of temperature of wire if the whole of work done in stretching goes in heating the wire.Given Y=2 10^11 NM^-2 ,specific heat of material of wire =0.11,specific gravity=54.5 and J=4.2*10^7 erg cal^-1.
The answer is 2.
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