Heat can be calculated using the following formula:
q=mcΔT
m=mass of the substance
c=specific heat
ΔT=temperature difference
=(0.3850 (J/g)⋅∘C) x (720.0 g) x (27.71- 15.29)∘C
=( 0.3850 x 720 x 12.42) J
=3442.8 J
So, 3442.8 J of energy required to heat a section of the copper tubing that weighs about 720.0g from 15.29 degrees to 27.71 degrees.