First year Computer Science Student, University of Bath
A*A*A*A in A level Mathematics, Physics, Computing and History.
I'd love to pass on my knowledge of my A level subjects to anyone who needs help!
I have a wealth of resources and good recommended websites for you to succeed in your exams!
|Computing||A Level||£20 /hr|
|Maths||A Level||£20 /hr|
|Physics||A Level||£20 /hr|
Osasuyi (Student) April 14 2016
Duke (Parent) April 14 2016
Gabriel (Student) April 8 2016
Gabriel (Parent) April 8 2016
The moment of a force about any point is defined as the force x perpendicular distance from the line of action of the force to the point - moment = F x d the unit is Nm.
Principle of moments states that for a body in equilibrium the sum of clockwise moments = sum of anticlockwise moments about any point.
F1d1 = F2d2 or W1d1 = W2d2, where W is weightsee more
Matter and antimatter will annihilate if they meet:
1) Particle meets antiparticle.
2) Both have rest energies due to their masses.
3) Both have kinetic energies due to their movement (if they are moving).
4) They annihilate to produce 2 photons which move in opposite directions.
5) Each photon energy = ½ the total (rest energy + kinetic energy).
AND (both conditions on either side of the AND operation MUST be satisfied for the IF function to work)
OR (either condition on each side of the OR operation MUST be satisfied for the IF function to work)
NOT (used when something needs to be displayed UNLESS a value is a certain amount/type/name etc.)
XOR (used when exclusively ONE of the conditions has to be met – not both! This is where XOR and OR differ.)see more