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Physics paper 3 NOTES.

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Assalam 0 Alaikum, I am Ali (New in this forum) , here are your physics IGCSE notes,

Bismillah E Rehman E Rahim,:

♦Electro Magnetic Induction consist of 3 parts:

Soleniod
A.C Generator
Transformer

♦Ways to increase magnitude of e.m.f:

Use stronger Magnet
Increase the speed of moving the magnets
Increase no. of turns on the coil.

♦Properties of sound wave

1) The higher the amplitude, the louder is the sound.
2) Frequency is the pitch of the sound.
3) Quality refers to the tone

♦Ways to Demagnetise Magnets

1)Dropping/ Hammering
2)Heating
3)Electrical Method (Use of AC Current)

♦PHYSICS Kinematics

Speed refers to the distance travelled per unit time.
Velocity is the rate of change of displacement
Acceleration is the rate of change of velocity

Amplitude : refers to the maximum displacement from rest position.
Wavelength : refers to the distance between one crest to the next successive crest. SI Unit: Lamda 入
Frequency : refers to the number of waves produced per unit time. SI Unit: Hertz (Hz)
Period : refers to the time taken for one complete wave.
Speed : refers to the distance travelled by the wave per unit time.

♦NAME : Measured in : SI Unit

Voltage : Volts : V

Resistance : Ohms : Ω

Current : Ampheres : A

Power : Watts : W

Energy : Joules : J

Force : Newtons : N

Charge : Coulomb : C

Frequency : Hertz : Hz

Time : Seconds : S

Here you go with some important physics IGCSE formulaes:

Formula in Symbols Formula in Words
v = d / t speed = total distance / total time
w = m x g weight = mass x acceleration of gravity
a = v / t acceleration = change in speed / change in time
d = m / v density = mass / volume
F = m x a force = mass x acceleration
x = k x F extension = a constant x load
W = F x d work = force x distance
p.e. = m x g x h potential energy = mass x acceleration of gravity x height
k.e. = ½ x m x v2 kinetic energy = ½ x mass x velocity squared
e = Eout / Ein x 100% energy efficiency = energy output / energy input x 100%
E = W energy used = work done
E = m x c2 energy of a nuclear reaction = mass x speed of light squared
P = E / t power = energy / time

Physics of Waves
Formula in Symbols Formula in Words
c = f x  speed of a wave = frequency x wavelength
i = r angle of incidence = angle of reflection
n = sin i / sin r index of refraction = sine of incident angle / sine of refracted angle

Electricity and Magnetism
Formula in Symbols Formula in Words
I = Q / t current = charge / time
R = V / I resistance = potential difference / current
R = k x l / A resistance = a constant x length / cross sectional area
R = R1 + R2 resistances in series add together
1 / R = 1 / R1 + 1 / R2 reciprocals of resistances in parallel add together
I = I1 + I2 currents in parallel add together
Iin = Iout total current into a point = total current out of a point
V = V1 + V2 voltage of source = sum of all voltage drops in a circuit
P = I x V power used in an electric circuit = current x voltage
E = I x V x t energy used in an electric circuit = current x voltage x time
Vp = Np voltage in primary coil = number of turns in primary coil
Vs = Ns voltage in secondary coil number of turns in secondary coil
Vp x Ip = Vs x Is power in primary coil = power in secondary coil (for a perfect transformer)

Geometry
Formula in Symbols Formula in Words
a = s2 area of a square = length of side squared
a = l x w area of a rectangle = length x width
a = ½ x b x h area of a triangle = ½ x base x height
a =  x r2 area of a circle = Pi x radius squared
v = s3 volume of cube = length of side cubed
v = l x w x h volume of cuboid = length x width x height
v =  x r2 x h volume of cylinder = Pi x radius squared x height

Some ordinary formulaes also. (If repeated then ignore):

V=Resistance (R) * Current (I)
f=ma
w=mg
e=mc2
m=fd
e=mv2/2g kinetic energy
e=mgz/g potential energy
p=p(rho)gh/g pressure of depth
gamma=p(rho)g/g specific weight
t=(u/g)(dv/dy) shear stress


Oh atlast it has finished . My palm is paining but no problem If I've helped u guyz.
Just Hope for A*
InshAllah we will get an A*
If any correction need to be made please inform thanks.

All u guyz can do for me is :
Just pray for me !

Thanks,
Warm Regards,
-A|i-
 
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sorry bro, i dont think this will be a very beneficial notes to study from since its kinda not organised and can seriously be hard to understand ,,, thats my opinion tho ...
 
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Thanks so muchhh !! Iv been looking for the formulas like thiss :)
In sha Allah A* for all of us *cheers* ^^
 
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Thanks alot aliii...inshala we will pray for you.....but can you kindly post some notes on Atomic Physics cuz am totally screwed in this chapter and i dont wanna loose a 10 mark question :/
 
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ali4lyf
u are ali123456789
:D
did u study them coz its toooooo hard and some of them i think it not in the syllabus (dunno what formulas but there is :) )

ill pray for u to *what abdullah said :p *
 
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@ shehab94 : here u go :)

a Alpha rays (or particles) helium nuclei – 42 He
· Big and heavy (slow moving)
· Don’t penetrate into materials
· Very ionising
· Blocked by paper

b Beta rays (or particles) high-energy electrons – -10 e
. Penetrate materials moderately
· Ionise moderately
· (for every beta particle emitted, a neutron turns into a proton in the nucleus)
· Blocked by thin Aluminium

c Gamma rays, electromagnetic waves with shorter wavelength (higher frequency) than x-rays
· Opposite to alpha
· Penetrate materials well
· Weakly ionising

If u need more than ur free to ask it =)

@ hao chen:Who is ali123456789? maybe you know him but I dont know him
and which part is not in our syllabus? tell me ok . em waiting. =)

Warm regards,
Ali4lyf
 
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dont steal my profile avatar
ahhh maybe u dont know how to get one :p
no problem ill change mine :)

the last part of the formulas :D

ali123456789 is u, urself,
dont tell me u got brainwashed :D
 
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Dont be jealous @ hao chen. check ur avatar is totally different from me , and how many times do I need to tell u that I dont know ali123456789 .

If u have any doubts then u can ask =)

-A|i-
 
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i dont thx for ur advice :D
ur avatar was the same as mine (i got prove :D *screenshot :D * )
i also hv prove that u know ali123456789 (ofcourse ur him :D )
hahaha
lets stop :D
or else ill win :)
study more and memorize ur note :)
 
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hahaha lolx. what's the prove that em ali123456789? stop lying ok !!!

B in limits :p
 
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shud i post it ?????

"B in limit" shudnt be said by u hahahaha

just stop or ill post many thing :D
 
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@ Ali4lyf ur idiot ok Haochen is my friend as he always says to me to thank him on his posts.

SO MIND IT ALI4LYF DONT SAY ANY THING TO MY HAO CHEN !..
 
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Uff My GOD . You guyz are mad leave me please. If u both have any doubts ask me and leave my brain dont eat it .
@ ali123456789 you're hao chen's true supporter lol. and no body is watching this:( I wish I would also have that much thanks as hao chen have (From u).
 
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Ali4lyf i dont need ali123456789's thanks so u can log out of this account and log in with the account "ali123456789" ad un thank me !!!!
thx u :D

and there is one mistake u made:
u just thx me with ali123456789 so that other will say i took support from u but even if u un thk all of them ill still hv alot that i gain fairly :D
 
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