List Of All Physics Energy Equations By ECE Tech Notes

If you are reading is related to STEM background then this post can be helpful in gaining some knowledge about the topic of science and energy equations.

Energy is a capacity to do work, and as we know that it can neither be created nor be destroyed, and can only be converted from one form to another. 

It is a fundamental concept that underlies all the aspects of existence. It powers our daily life from lighting our homes to fueling our transportation etc.

There are different types of energy equations that exists in various forms like thermal, electric, radiations, kinetic, potential and chemical energy etc. So in this post, let us see how the energy is related to these factors, which are mentioned below.


The List Of Various Energy Equations are Listed Below

1. E= Pt

P is power 
t is time 


2. E = kT

k is Boltzmann constant - 1.38×10^-23 J/k
T is room temperature in kelvin


3. E= hc/𝛌

h is plank's constant - 6.626×10^-34 Js
c is speed of light - 3×10^8 m/s
𝛌 is wavelength of incident radiation


4. E= 𝝈T^4

𝝈 is stefan's constant - 5.6703×10^-8 w/m^2/k^4
T is room temperature in kelvin


5. E = hf

h is plank's constant - 6.626×10^-34 JS
f is frequency of the radiation


6. Ek = 1/2mv^2

m is mass 
v is velocity of the object or particle


7. Ep = mgh

m is mass of object 
g is acceleration due to gravity - 9.81 m/s^2
h is height


8. E = mc^2

m is mass of object
c is speed of light


9. E = f⋅d

f is force
d is distance


10. E = QV

Q - rate of charge flow
V -  potential difference


11. Q = mc∆T

Q is heat energy
m is mass
c is specific heat capacity
∆T is change in temperature


12. E = pc

p is photon momentum
c is speed of light


Another interesting concept is that the energy is also related to speed, frequency and wavelength which is given by,

High energy = high speed = high frequency = lower wavelength.

Low energy = low speed = low frequency = higher wavelength.


Conclusion :


So, we have came across some useful energy equations and also the relationship between speed, frequency and the wavelength.

If you have any questions, then comment below. Also share if this post was helpful.

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