An aluminum rod is 21.5 cm long at 20°C and has a mass of 350 g. If 12500 J of energy is added to the rod by heat, what is the change in length of the rod?

Answer 1

first find the change in temp

heat=mass*specificHeat*deltaTemp

look up specificheat for al, compute delta temp

then, go to linear expansion.
deltaLength= Length*coefflinearexpansion*deltaTemp
look up the linear expansion coeff, compute change in length.

Answer 2

It's very good but just only need the accurate procedures