Answer :
When two pieces of flint rock are hit together, a visible spark is produced. Mechanical energy is turned into electromagnetic energy and internal energy throughout this process. Option 3 is correct.
What is the law of conservation of energy?
According to the law of conservation of energy, the energy of an isolated system stays unchanged throughout time; it is said to be conserved.
Energy cannot be created nor be destroyed and can be transferred from one form to the other form.
When two pieces of flint rock are hit together, a visible spark is produced. Mechanical energy is turned into electromagnetic energy and internal energy throughout this process.
Hence,option 3 is correct.
To learn more about the law of conservation of energy refer to the link;
https://brainly.com/question/2137260
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