Stuff i keep fucking forgetting Flashcards
Impulse
Impulse is defined as the product of the net force and the time interval which the force is applied
Newton’s first law
A body will stay at rest or continue to move at a constant velocity unless acted upon by a resultant external force
Newton’s second law
The rate of change of momentum of a body
is directly proportional to the resultant force acting on the body
and the momentum change takes place in the direction of the resultant force
Newton’s third law
Characteristics of action reaction pair
They are equal in magnitude but opposite in direction
They act on different bodies
The forces are the same type or nature
Formula for elastic potential energy
E = 1/2 k x^2
Newton’s Law of Gravitation
Newton’s Law of Gravitation states that the gravitational force between two point masses is proportional to the product of masses and inversely proportional to the square of separation.
Gravitational potential
Gravitational potential at a point in a gravitational field is the work done per unit mass by an external agent in bringing a small test mass from infinity to that point.
Gravitational potential energy
Gravitational potential energy of a small test mass at a point in a gravitational field is the work done by an external agent in bringing the mass from infinity to that point without any change in its kinetic energy.
Thermal equilibrium
Thermal equilibrium is a situation in which there is no net exchange of energy when two objects are placed in thermal contact
Ideal gas equation
pV=nRT
First law of thermodynamics
The increase in internal energy is the sum of the heat supplied to the system and the work done on the system
No change in Temperature Volume Pressure Heat
Isothermal
Isovolumetric
Isobaric
Adiabatic
the fucking Electromagnetic spectrum
Go refer lazy put here
Polarisation
Polarisation is a process by which a wave’s oscillations are made to occur in a single plane only
Darth Mauls’ Law for plane polarised EM wave
A=A0 cos theta
The principle of superposition
When waves meet, the actual displacement is the vector sum of separate displacements of the individual waves and each waves proceeds as though no other waves exist
stationary wave
A stationary wave is a wave with no transfer of energy
A stationary wave is formed from the superposition of two progressive wave trains of
equal amplitude and frequency
travelling with the same speed in opposite directions
over the same space
formula for double slit interference
𝛌=ax/D
formula for single slit diffraction
sin(angle from first minimum and central maximum to centre of slit) =𝛌/b
Rayleigh’s criterion
Rayleigh’s criterion says the images of two point sources can just barely be distinguished from each other if the central maximum of one diffraction pattern falls onto the first minimum of the other one
Rayleigh’s criterion formula
angles between the two sources from the centre of the slit =𝛌/b
Formula for grating
d sin(theta)=n𝛌
