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Physics B Formulas
Only formulas
67
Physics
11th Grade
05/03/2011
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Term
Average Velocity
 Definition

Δx

Δt

m/s

 
Term
Average Acceleration
 Definition

Δv

Δt

m2/s

 
Term
3 Kinematics Equations
 Definition

x=x0+v0t+.5at2

v2=v02+2a(x-x0)

v=v0+at
Term
Force of Friction
 Definition

Ff=μFN

Term
Torque
 Definition

T=F•d

 
Term
Net Force
 Definition
Fnet=ma
Term
Momentum
 Definition

p=mv

kg•m/s or N•s

 
Term
Impulse
 Definition
FΔt=Δp

kg•m/s or N•s

 
Term
Conservation of Momentum
 Definition
p1,0+p2,0=p1,f+p2,f
Term
2 Work Equations
 Definition

W=F•dll

W=ΔKE=Kf-Ki

N•m=J=Joule

 
Term
Kinetic Energy (KE or K)
 Definition

KE=½mv2

Term
Potential Energy (PE or U)
 Definition

PE=mgh
Term
Conservation of Energy
 Definition

Ki+Ui+W=Kf+Uf
Term
Force on a Spring
 Definition
Fspring=kx
Term
Potential Energy of a Spring
 Definition

PEspring=½kx2

 
Term
Power
 Definition

P=W/Δt=work/time=F•v

Joules/second=W=Watts
Term
Centripetal Acceleration
 Definition

ac=v2/r
Term
Gravitational Force
 Definition

FG=GM1M2

     r2

Term
Potential Energy of Gravity
 Definition

PEG=GM1M2

       r
Term
Period
 Definition

T=1/ƒ

cycle/second=Hz=Hertz
Term
Period of Oscillation for a Spring
 Definition
T=2π√(m/k)
Term
Period of Oscillation for a Pendulum
 Definition
T=2π√(L/g)
Term
Thermal Expansion
 Definition

ΔL=[image]L0ΔT
Term
Rate of Heat Transfer (H)
 Definition

H=kAΔT

   L
Term
Ideal Gas Law
 Definition
PV=nRT
Term
Kinetic Energy of Gas
 Definition
KE=3/2kbT
Term
vrms
 Definition

 

vrms=√(3kbT/m)
Term
First Law of Thermodynamics
 Definition

ΔU=Q+W

Term
Work Done by Gas
 Definition
W=-pΔV
Term
Engine Efficieny
 Definition

e=W/QH (e<1)
Term
Carnot Engine
 Definition

eideal=TH-TC

        TH
Term
Pressure
 Definition
P=Force

    Area
Term
Pressure in a Static Column
 Definition

P=P0+ρgh
Term
Density
 Definition

ρ=Mass

       Volume
Term
Buoyant Force
 Definition

FB=(ρfluid)(Vsubmerged)g
Term
Fluid Flow Continuity
 Definition

A1v1=A2v2
Term
Bernoulli's Equation
 Definition

P1+ρgy1+ρv12=P2+ρgy2+ρv22

 

 
Term
Ohm's Law
 Definition
V=IR
Term
Power in a Circut
 Definition
P=IV=V2/R=I2R
Term
Resistors
 Definition

Series=ΣR=R1+R2...

Parallel=ΣR=1/R1+1/R2...

 
Term
Capacitors
 Definition

Series=ΣC=1/C1+1/C2...

Parallel=ΣC=C1+C2...
Term
Electric Force on a Charge in an Electric Field
 Definition
F=qE
Term
Electric Field Produced by Charges
 Definition

E=kq1q2

  r2
Term
Electric Field Produced by Parallel Plates
 Definition
E=V/d
Term
Potential Energy in terms of Voltage
 Definition
PE=qV
Term
Voltage Produced by Charges
 Definition

V=kq1q2

 r
Term
Charged Stored in a Capacitor
 Definition
Q=CV
Term
Capacitance of a Parallel Plate Capacitor
 Definition

C=ε0A

    d
Term
Speed of a Wave
 Definition

v=λƒ

 
Term
Position of Bright and Dark Spots for a Double Split
 Definition

 

dsinθ=mλ or x=mλL

                      d
Term
Index of Refraction
 Definition
n=c/v
Term
Wavelength of Light in a Material
 Definition
λn=λ/n
Term
Thin Film Intereference
 Definition
2t=mλn
Term
Snell's Law
 Definition

n1sinθ1=n2sinθ2

 
Term
The Critical Angle for Total Internal Reflection
 Definition
sinθc=n2/n1
Term
Mirror Equation
 Definition
1/ƒ=1/di+1/do
Term
Magnification Equation
 Definition
m=-di/do=hi/ho
Term
Energy of a Photon
 Definition

E=hƒ=hc

         λ
Term
Momentum of a Photon
 Definition

                              p=h=E

                                  λ  c
Term
de Broglie Wavelength
 Definition

λ=h

    p
Term
Energy-mass Conversion
 Definition
E=mc2
Term
Magnetic Flux
 Definition
ΦB=BA
Term
Induced EMF
 Definition

ε=N ΔΦ

      Δt
Term
Induced EMF for a rectangular wire moving in or out of a magnetic field
 Definition
ε=BLv
Term
Force on a Charged Paricled in a Magnetic Field
 Definition
F=qvB
Term
Force on a Current-Carrying Wire
 Definition
F=ILB
Term
Manetic Field on a long, straight, current-carrying wire
 Definition

B=μ0I

    2Πr
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