how energy transform?

Answer 1

You might want to expand on the question a bit.

Answer 2

1. Energy and mass can be transformed (in Nature) per Einsteins equation E = mc2.

2. Kinetic energy of particles can be transformed by collision. Steam (water molecules) bounce off the walls of a cool chamber and slow down and condense.

3. Potential energy (height) of a mass (pendulum) is transformed into kinetic energy (velocity) as the pendulum swings back and forth.

4. Potential energy (height) of a pound of water in a plastic bag is converted to heat (one degree F) if dropped 778 feet. one Btu = 778 foot pounds).

5. Photons kick electrons of atoms and molecules to higher more energetic orbits that return in one or more steps to rest orbits releasing photons. UV (black light) can make many substances fluoresce.

6. Chemical reactions (in a battery) release excess electrons to produce an electrical current.

7. Mechanical force driving a wire coil through a magnetic field induces an electric current in the coil.

8. Electric current passing through a resistor (light bulb filament) heats it to incandescence producing light energy.

9. Rubbing two sticks together transforms mechanical energy into heat due to friction.

10. Electrical energy in a stereo speaker is transformed into mechanical energy and sound energy.

11. Chemical energy of an explosive is transformed into mechanicasl energy to split and remove rocks.