Question

What are10 examples of energy transformations, in the real world. For each, define the system and describe the energy transformation.

Answer 1

1. When an object is dropped from some height then then it's potential energy transformed to kinetic energy of object.

Here earth and object is system.

2. When an object moves in ground then it's kinetic energy transforms into heat in ground due to friction.

Here system is object and ground.

3. When a loop is rotated inaide a magnetic field field then mechanical gets converted into electrical energy.

Here magnetic and loop are system.

4. In ceiling fan electrical energy gets converted into mechanical energy.

Here system is electricity and fan.

5. When an object is dropped in floor it produces sound. This initial potential energy gets converted into kinetic energy and sound energy.

6. When an object is hanged from ceiling from spring then it streched spring. Thus potential energy of object goes into potential energy of spring.

Here system is object and spring.

7. When we eat food then it's internal energy goes into useful energy in the form of ATP and ADP.

Here system is us and food.

8. In an electronic toy electrical energy of battery transform into kinetic energy.

Here system is toy and battery.

9. When a heated object looses energy then its energy goes into radiation energy emiited from object.

Here system is object and radiation.

10. When two charges attract each other then their potential energy goes into kinetic energy of charges.

Here system is two charge.