# Basic Physics Formula Part - 2

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## Electromagnetism:

F = qE (force on a charged particle equals the charge times electric field strength)

F = Bqv (force on a charged particle moving through a magnetic field equals magnetic field strength times charge times velocity)

V = IR (Ohm's law - voltage equals current times resistance)

## Fluid Mechanics:

F = rho * g * V (buoyant force equals density times gravity times volume)

P1 + 1/2 * rho * v1^2 + rho * g * h1 = P2 + 1/2 * rho * v2^2 + rho * g * h2 (Bernoulli's equation - pressure plus kinetic energy plus potential energy equals constant)

## Atomic and Nuclear Physics:

E = mc^2 (mass-energy equivalence - energy equals mass times the speed of light squared)

lambda = h/p (de Broglie wavelength - wavelength equals Planck's constant divided by momentum)

N = N0 * e^(-lambda*t) (radioactive decay - number of radioactive nuclei equals initial number times e to the negative decay constant times time)

## Quantum Mechanics:

E = hf (Planck-Einstein relation - energy of a photon equals Planck's constant times its frequency)

p = h/lambda (de Broglie's equation - momentum equals Planck's constant divided by wavelength)

✅ HΨ = EΨ (Schrödinger's equation - the wave function Ψ of a system satisfies the time-independent Schrödinger's equation HΨ = EΨ, where H is the Hamiltonian operator and E is the energy of the system)

## Electromagnetic Waves:

c = f * lambda (speed of light equals frequency times wavelength)

E = hc/lambda (energy of a photon equals Planck's constant times the speed of light divided by wavelength)

B = E/c (magnetic field strength equals electric field strength divided by the speed of light)

## Modern Physics:

V = c^2 / sqrt(1-v^2/c^2) (relativistic velocity addition - velocity in one frame equals the velocity in another frame plus the velocity of the two frames divided by the speed of light squared)

E = mc^2 + K (total energy of a particle equals its rest energy plus its kinetic energy)

N = N0 * e^(-λt) (radioactive decay - number of radioactive nuclei equals the initial number times e to the negative decay constant times time)

## Special Relativity:

t' = t/sqrt(1-v^2/c^2) (time dilation - time in a moving frame equals time in a rest frame divided by the square root of 1 minus velocity squared over the speed of light squared)

L = L0 * sqrt(1-v^2/c^2) (length contraction - length in a moving frame equals length in a rest frame times the square root of 1 minus velocity squared over the speed of light squared)

E = gamma * mc^2 (relativistic energy - energy equals the rest mass times the speed of light squared times the gamma factor)

These are just a few more basic physics formulas. As you continue to study physics, you will encounter many more formulas that describe the behavior of the physical world around us