Energy and 10 different types
Magnetic Energy
magnetic field
B = μ0/2πr
Example-generator
Magnitude and direction at the same
ENERGY
Work
Quantitative property
S.I. Unit= Joule
Examples
shooting a rubber band
releasing the arrow from the bow
Dimension formula
[E] = [ML2T-2]
Sound energy
longitudinal Waves
Due to vibration
S.I unit= Watt
S.E= Sound power/ Area
Examples
Belching
Gulping Water
Musical instruments
Potential Energy
Energy stored in an object
Energy possessed by a body
P.E= mgh
Dimensional formula
M1L2T-2
Example
pendulum
Stretching a rubber band
Nuclear Energy
Energy released during nuclear fission
Splitting atoms in a reactor to heat
N.E= mc2
Example= nuclear fission
Kinetic Energy
energy of motion.
easiest to observe
K.E= [Mass × Velocity2] × 2-1
Examples
A river flowing at a certain speed
airplane
Light Energy
Electromagnetic radiation
travels in straight lines
Energy of Light = (6.626 × 10-31 × c) / w(m)
Example
Sunlight
light bulbs
Chemical Energy
energy stored in chemicals
C.E=6CO 2 + 6H 2 O – C 6 H 12 O6+ 6O2
S.I. Unit- joule
Examples
coal
wood
petroleum
Mechanical Energy
Due to motion
Sum of kinetic energy and potential energy
K.E.= 1/2 mv2 + mgh
example-ideal simple pendulum
Types of mechanical energy
Transnational kinetics
rotational kinetics
Gravitational Energy
Due to gravity
Natural force
G= MGH
Associated with Gravitational Field
Examples of G.E.
A raised weight
Water that is behind a dam.
Heat Energy
Rise in Temperature
Movement of atoms and molecules
Q=M.C.(Tf-Ti)
Transfer of thermal energy
Types of H.E
conduction
Convection
Radiation