We would like to increase the length of a 15 cm long copper a rod of cross-section 4mm^(2) by 1 mm. The energy absorbed by the rod if it is heated is E_(1). The energy absorbed by the rod if it is stretcheed slowly is E_(2). Then the value of (E_(1))/(E_(2)) is 5xx10^(n). Find n. [Various parameters of copper are : Density =9xx10^(3)"kg"//"m"^(3), Thermal coefficient of linear expansion =16xx10^(-6)K^(-1), Young.s modulus =135xx10^(9) Pa, Specific heat =400J//kg-K]

We would like to increase the length of a 15 cm long copper a rod of c

1.	We would like to increase the length of a 15 cm long copper a rod of cross-section 4mm^(2) by 1 mm. The energy absorbed by the rod if it is heated is E_(1). The energy absorbed by the rod if it is stretcheed slowly is E_(2). Then the value of (E_(1))/(E_(2)) is 5xx10^(n). Find n. [Various parameters of copper are : Density =9xx10^(3)"kg"//"m"^(3), Thermal coefficient of linear expansion =16xx10^(-6)K^(-1), Young.s modulus =135xx10^(9) Pa, Specific heat =400J//kg-K]
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