Low-alloy, 1025 carbon steel (Fe-0.25wt% C-0.45wt% Mn) has a specific heat (cp) of 486 J kg-1 K-1, a density of 7.86 g/cm3, thermal expansion coefficient (a) of 12x10-6 K-1 and a thermal conductivity (k) of 51.9 W m-1 K-1. A 10 meter long, 1 cm diameter 1025 steel wire at 25°C is heated with 550 kJ. What is the temperature and length of the wire after heating?