Question

3). What is conservation of energy? Give two examples.​

Answer 1

Answer:

According to the law of conservation of energy, energy cannot be created or destroyed,  although it can be changed from one form to another.  

In a torch, the chemical energy of the batteries is converted into electrical energy, which is converted into light and heat energy. In hydroelectric power plants, waterfalls on the turbines from a height. This, in turn, rotates the turbines and generates electricity

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Answer 2

conservation:

• the energy of interacting bodies or particles in a closed system remains constant.

For example:

1. when a pendulum swings upward, kinetic energy is converted to potential energy.
2. Light Bulb