Question

Sometimes a short circuit in an electrical wiring system can produce enough thermal energy to melt a wire. How much thermal energy must be transferred to a 20.0-g piece of copper wire to raise it from room temperature (25.0°C) to its melting temperature (1085.0°C)? CCu = 385 J/(kg·°C).

Answer 1

you can calculate heat from joules law of heating
and Q= M C dT
check the units M is in g and C is in Kg

Answer 2

thank you!

Answer 3

nvm :)