The specific latent heat of fusion for copper is 205 000 J/kg205\,000\text{ J/kg}205000 J/kg.
Calculate the thermal energy required for 0.4 kg of copper to melt.
Use an equation from the data sheet to help you.
20 500 J20\,500\text{ J}20500 J
82 000 J82\,000\text{ J}82000 J
102 500 J102\,500\text{ J}102500 J
512 500 J512\,500\text{ J}512500 J