Objects considered a solid:
Pencil
Water bottle
Phone
Table
Plant
Atoms are very attracted to one another in solid objects. They vibrate, but remain in fixed positions without moving.
The answer has to depend on the mass of the copper that you're trying to melt.
But there is a formula which you can calculate the energy required if you have the information of the mass. This formula requires the value called specific latent heat of fusion, which is the energy required to melt or freeze a specific mass of copper without changing its temperature but change its state.

E is the total energy required, m is the mass, and lv is the specific latent heat of fusion of copper.
Usually, in questions, lv is given. But we can also look it up online which is around 205kJ kg^-1
this means, to melt or freeze a copper, we need to work the mass multiplied by 205kJ in order to calculate its total energy needed or released.
Clap your hands each part word you eat and you will get your answer.
Explanation:
the best way to understand the age of the earth is to estimate the age of matirials in it