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# physics equations... watch

1. ...i cant find my texbook now....can anyone post the required equations...or give me a link plz....p.s triple sience i.e includes momentum

rgrds
2. HHAHAHAHAHA
3. force= mass*acc

momentum=mass*velocity
4. oh there are more!

moment= force *perpendicular distance between line of action and pivot

kinetic energy = 1/2*mass*speed2
5. cheers,lol innterogator lol shush lol,anyhows anyone know a site...im so f******g pi****d off for loosin ma textbook...all them cgp jokes...

rgrds
6. Basic but important Physics formulae...

Need to know:
V=IxR
I=V/R
R=V/I
Q=Ixt
-----
P=VxI and P=I²xR
E=QxV and V=E/Q
E=Pxt and E=IxVxt (These two are to calculate Energy, but can be used to find time)
-------
F=m x a
W=m x g.f.s (gravitational field strength, they accept g in place of g.f.s though)
D=m/V
M=F x r (To calculate Moments, Force times Perpendicular Distance)
s=d/t
a=v1-v2/t or a=F/m (first formula is change in velocity over time)
f=1/T (T being time period)
v=f x (wave formula)
Wd=F x d
PE=m x g.f.s x h
KE=1/2m x v²
-------------
Need to know two others:
Efficiency= Useful work output / Total energy output
Transformer Equation: Primary Coil Voltage = No. of turns on Priamry Coil
Secondary Voltage No. of turns on Secondary

If you want to know what any symbol is just ask me, (i.e. F=m x a is Force equals mass times acceleration... etc)

These are basic stuff which you should have hammered home, very important...
7. The syllabus should have a list of the equations which are not provided in the exam at the front. If you have a Lett's physics revision guide, then they are in the back of that too.

If you're doing OCR, check out the syllabus. It is great for last-minute revision!
8. I am not sure if we need to know formulae considering Area, Volume and Pressure, learn them just incase, they are:

Pressure: P=F/A
Area: P=F/A
Volume: P1 x V1 = P2 x V2

You know how to use the formula correctly, yeah?
Ok, best way is to use a formula triangle...
How to use a formula triangle:
If the equation is A=BxC, then the triangle would be like this...
A
B|C (you want to find A, so cover up A and you are left with B|C or BxC)

If you wanted to find B, in the same formula, u set the triangle out like so:
A
B|C (Cover up B and you're left with A / C)

Also, if the equation is like this:
A=B/C, then the triangle is like this:
B
A|C (Obviously B needs to be at the top so that it can be divided by something...)
Then if u want to find C, you cover up C and are left with: B/A...)
Simple Ask me if u need help.
9. get the syllabus off the website and it will have it all written down for you. good luck www.aqa.org.uk

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