A 1.0 kg bar of copper is heated at atmospheric pressure (1.01*10^5 N/m^2). If its temperature increases from 20 degree celcius to 50 degree celcius , calculate the change in its internal energy , alpha= 7.0*10^-6 per degree celcius, density = 8.92*10^3 kg/m^3 and specific heat capacity = 387 J/kg degree celcius.
Arnab Mandal , 13 Years ago
Grade 11
