Define energy. Write SI unit of energy. What are the different forms of energy? [2]
[INFORMATION BASED]
Answers
Answer:
ENERGY
Energy is defined as the capacity of a physical system to perform work. However, it's important to keep in mind that just because energy exists, that doesn't mean it's necessarily available to do work.
FORM OF ENERGY
Energy exist in several form such as heat, kinetic or mechanical energy, light, potential energy, and electrical energy.
- Heat - Heat or thermal energy is energy from the movement of atoms or molecules. It may be considered as energy relating to temperature.
- Kinetic Energy - Kinetic energy is the energy of motion. A swinging pendulum has kinetic energy.
- Potential Energy - This is energy due to an object's position. For example, a ball sitting on a table has potential energy with respect to the floor because gravity acts upon it.
- Mechanical Energy - Mechanical energy is the sum of the kinetic and potential energy of a body.
- Light - Photons are a form of energy.
- Electrical Energy - This is energy from the movement of charged particles, such as protons, electrons, or ions.
- Magnetic Energy - This form of energy results from a magnetic field.
- Chemical Energy - Chemical energy is released or absorbed by chemical reactions. It is produced by breaking or forming chemical bonds between atoms and molecules.
- Nuclear Energy - This is energy from interactions with the protons and neutrons of an atom. Typically this relates to the strong force. Examples are energy released by fission and fusion.
SI UNIT OF ENERGY :- JOULE.
The SI unit of energy is the joule (J) or newton-meter (N * m). The joule is also the SI unit of work.
⛔ NONEXISTENT ⛔
Answer:
The capacity of doing work by a body or an object is known as Energy.
SI Unit of energy is known as Joule.
There are seven forms of energy-
1) Mechnical Energy.
2) Heat or Thermal Energy.
3) Chemical Energy.
4) Sound Energy.
5) Electrical Energy.
6) Nuclear Energy.
7) Solar Energy.