An object has a -8 c charge. the object breaks into two pieces. one piece has a charge of -2 c. what is the exact charge (in c) of the other piece? do not include units with your answer.

As we know the property of charge that charge is always conserved

so we can say

here we know that total charge is

and we also know that

from above equation we can say

so the other charge will be -6 C

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask