OCR GCSE Physics Notes | P1
* Before the discovery of the electron: atoms as tiny spheres that could not be divided.
* Plum Pudding Model: the atom as a ball of positive charge with negative electrons embedded in it.
* Rutherford&
Jaisul Naik
OCR GCSE Physics Notes | P2
* Scalar: magnitude e.g. mass, energy, speed, distance.
* Vector: magnitude and direction e.g. force, velocity, displacement.
* Average speed = distance travelled/ time taken.
* Acceleration = change in velocity/ time taken.
* F=ma
* W=mg
OCR GCSE Physics Notes | P3
* Q = It
* Q: charge (C)
* I: current (A)
* t: time (s)
* Current is the rate of flow of charge.
* Charge is a property of all matter and that there are positive and negative
GCSE Maths | Quadratics
Factorising easy quadratics
* a2 - b2 = (a+b)(a-b)
Difference between two squares
Difference between two squares
Factorising harder quadratics
Completing the square
Using the quadratic formula
Quadratic inequalities
Price Mechanism | A-Level Economics Model Paragraph (AQA, Edexcel, OCR)
* excess demand
* ration
* incentive
* evaluation
* only those who are willing and able to buy will benefit
* is this unfair and unequal?
* market is impartial and no risk of government failure
* market is also