Stuff i keep fucking forgetting

Question 1

Impulse

Answer 1

Impulse is defined as the product of the net force and the time interval which the force is applied

Question 2

Newton’s first law

Answer 2

A body will stay at rest or continue to move at a constant velocity unless acted upon by a resultant external force

Question 3

Newton’s second law

Answer 3

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

Question 4

Newton’s third law

Answer 4

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

Question 5

Formula for elastic potential energy

Answer 5

E = 1/2 k x^2

Question 6

Newton’s Law of Gravitation

Answer 6

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.

Question 7

Gravitational potential

Answer 7

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.

Question 8

Gravitational potential energy

Answer 8

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.

Question 9

Thermal equilibrium

Answer 9

Thermal equilibrium is a situation in which there is no net exchange of energy when two objects are placed in thermal contact

Question 10

Ideal gas equation

Answer 10

pV=nRT

Question 11

First law of thermodynamics

Answer 11

The increase in internal energy is the sum of the heat supplied to the system and the work done on the system

Question 12

No change in 
Temperature
Volume
Pressure
Heat

Answer 12

Isothermal
Isovolumetric
Isobaric
Adiabatic

Question 13

the fucking Electromagnetic spectrum

Answer 13

Go refer lazy put here

Question 14

Polarisation

Answer 14

Polarisation is a process by which a wave’s oscillations are made to occur in a single plane only

Question 15

Darth Mauls’ Law for plane polarised EM wave

Answer 15

A=A0 cos theta

Question 16

The principle of superposition

Answer 16

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

Question 17

stationary wave

Answer 17

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

Question 18

formula for double slit interference

Answer 18

𝛌=ax/D

Question 19

formula for single slit diffraction

Answer 19

sin(angle from first minimum and central maximum to centre of slit) =𝛌/b

Question 20

Rayleigh’s criterion

Answer 20

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

Question 21

Rayleigh’s criterion formula

Answer 21

angles between the two sources from the centre of the slit =𝛌/b

Question 22

Formula for grating

Answer 22

d sin(theta)=n𝛌