Its not what we do once that shape our lives
Navigations are at the top.
<Shukur A.
PHYSICS
Principle of moments:The principle of moments states that when an object is in equlibrium...The clockwise moments at any point is equal to the anti-clockwise moment about the same point...
The 3newton laws
!st law:when an object is at rest,it remain at rest unless being acted upon..
2nd law:The acceleration of an object is proportional to the force exerted on the object
F = ma
force mass acceleration
3Rd law
When object A exerts a force at aobject B,then object B will exerts an equal amount of Force to object A...
Other formulas
W=mg(weight = mass x gravitational force)
a=v-u over t (find acceleration)
Density= mass over volume(find density)
Moment=f x d.....Note!! distance mus be from the pivot to the object
work done = f x s
w= force x distance
efficiency: useful energy over total energy x 100%
P= w over t
power = workdone(fxs) over time
SI unit = WATT
K.E kinetic energy= half mv square
GPE gravitational potential energy = mgh(mass GRAV height)
CHEMISTRY
Empirical formula
1.)Mass of sample
2.)Ar of an element
3.)No of moles:mass over ar
4.)Divide both by the smaller num of moles
5.)Ans
Vol OF Gas
formula for gas
Molar volume = 24dm cube
Volume:no of moles x molar volume(if given the mole)
volume:mass over molar mass x molar volume9If moles not given)
Mass of gas:vol x molar mass over molar volume
CONCENTRATION: mole over volume
This for my reference!!! :D.............I CAN DO IT!!