Question

Since energy cannot be destroyed then what do we mean when we say that energy is lost from a system?

Answer 1

Answer:

We mean that, the energy has transformed from the form present in that system to another form and realised in the atmosphere.

Answer 2

Explanation:

it means energy stored in system is totally converted into another form of energy

like when we eat food we get energy

then we start doing work

after something we feel tired why because energy consumed by the body get converted into another form