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11057320
Physics: Unit 2
Descripción
unit 2
Sin etiquetas
physics
year 11
unit 2
western australian certificate of education
Mapa Mental por
Ronald Tun
, actualizado hace más de 1 año
Más
Menos
Creado por
Ronald Tun
hace casi 7 años
2
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Resumen del Recurso
Physics: Unit 2
Vectors, Motion & Energy
Vector
Mag + Dir
Position
Displacement
Velocity
Acceleration
Gravity: 9.8 m/s^2 down
a = (v-u)/t
v(ave) = s/t
Rectilinear Motion
s = ut + 1/2 at^2
v^2 = u^2 = 2.a.s
Sign Convention
Scalar
Mag only
Speed, mass
Energy + Work
Ek
1/2 . m . v^2
Ep
m.g.h
Work
= F.s
Work = Ep = Ek
Power
W/T
F.V(ave)
Forces
Newtons Law of Motion
2nd: F = m.a
Momentum (p)
Impulse
Nota:
change
mv-mu
F.t
Damage
Collisions
Rebounds
Follow through
Conservation of p
Net( initial) = Net( FInal)
mv or mu
1st: Inertia
Body remains in state of motion or at rest until acted on by net unbal force
= Weight
Mass X Grav
Apparent: m.(g x (a-floor))
3rd: Every action has equal and opposite reaction
F(a on b) = F(b on a)
Rockets, Walking
Friction
Electrostatic
parallel
against and with
= k.N
Drag
terminal
Mass
amount of substance
Newtons
Normal F
electrostatic
!= 3rd
perpendicular
g = 9.8 m.s^2 down
AT an angle
SOH-CAH-TOA
Fsope = W.t x sine(θ)
Waves
Periodic, No Trasfer of matter
Transverse
Perpendicular
Longitudinal
Parallet
Properties
V m/s
= f . λ
= λ /T
Frequency Hz
WaveLength λ
T (period) s
Amplitude
Max min displacement or pressure
Charasteristices
Refract
BEND
Defract
SPREAD?
Reflect
BOUNCE
Total Internal Reflection
Super Positon
Constructive
Destructive
Phase
IN
OUT
Resonance
Forcing Hz = Natural Hz
Beat
|F1 - F2|
PAth Difference
Loud, Soft
1/2 λ or even
Standing Wave
Identical
Opposite dir
Same medium
Nodes
Anti Nodes
Internodal distance
1/2 λ
Air Column
Open
L = λ n/2
Closed
L = λn/4
Odd
Machenical
Sound
Electromagnetic
Light
3 x 10^8
Wave Fronts
Errors
Accuracy
Systematic
Precison
Random
Absolute error
%age
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