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78 Cards in this Set
 Front
 Back
Average Acceleration

ΔV / Δt


Final Velocity

Vi + at


Displacement

ΔX = Vi*t + 1/2(at^2)


Final Velocity

Vf^2 = Vi^2 + 2aΔX


Average Velocity

1/2 (Vi + Vf)


Gravitational Force

F = (G*m1*m2)/r^2


Torque

τ = rFsinθ


Kinetic or Static Friction

F(friction)≤ μ * N


Centripital Acceleration

(velocity)^2 / (radius)


Centripital Force

Mass * Acceleration
or (mass)(velocity)^2 / (radius) 

Work

F d cosθ


Power

Work/time


Kinetic Nrg

KE = 1/2 (mass)(velocity)^2


Potential Nrg

U = mass * gravity * height


momentum

p = mass * velocity


Impulse

Δp = Force * time
or m*Vf  m*Vi 

Celsius

C = K 273


Thermal Expansion

ΔL = α L ΔT


Volume Thermal Expansion

ΔV = β V ΔT


Heat Gained (Q)

Q = m c Δt


Heat Gained (Δphase)

Q = m * L
(L=heat of transformation constant) 

1st Law of Thermodynamics

ΔU = Q  W
(Q=heat nrg and W=work) 

2nd Law of Thermodynamics

ΔS of closed system will increase or remain unchanged


Density

ρ = mass / volume


Pressure

P = Force / Area


Absolute Pressure

Pabs= Patm + ρgh


Two Pistons

F1/A1 = F2/A2


Boyant Force

FB= ρ g V (where V is the volume of the object and ρ is the density of the liquid)


Velocity in different areas of a pipe (volume flow rate)

A1V1=A2V2


Stress

F/A


Strain

ΔL/L


Y (Young's Modulus)

Y= (F/A) / (ΔL/L)


Coulomb's Law (Force b/n charges)

F = (k*q1*q2) / r^2


Electric Field

E = k*q / r^2


Force of E Field on a charge

F = q * E


Electric potential

V = kq / r


Electric Potential Nrg

U = qV
(charge * voltage) 

Force of B Field on charge

q v B sinθ


Current

I = Δq / Δt


Force of Wire with current

F = I L B sinθ
(current*length*Bfield) 

B field created by long straight wire

B = (μo*I) / (2πr)


B field created by loop wire

B = (μo * I) / (2r)


Voltage

V = IR


Power in circuits

P = IV


Resistors in series

Rs = R1 + R2 ...


Resistors in Parallel

1 / Rp = 1/R1 + 1/R2 ...


Capacitance

C = Q / V


E field b/n capacitor plates

E = V / d


Capacitors in series

1 / Cs = 1/C1 + 1/C2 ...


Capacitors in Parallel

Cp = C1 + C2 ...


Irms

Imax / sqroot2


Vrms

Vmax / sqroot2


Imax

Irms * sqroot2


Vmax

Vrms * sqroot2


Hookes Law (Force of spring)

F = k x


angular freq of spring

ω = sq root (k/m)


angular freq of pendulum

ω = sq root (g/L)


Frequency

F = 1 / T
T=period 

Period of Spring

T = 2π sqroot(m/k)


Period of Pendulum

T = 2π sqroot (L/g)


Velocity of wave

V = fλ


Speed of Light

c = 3x10^8


Intensity

I = Power / area


Object and image formula

1/o + 1/i = 1/f = 2/r


Focal length

F = radius curve / 2


Magnification

m = image distance / object distance
or i / o 

Index of Refraction

n = c / v


Snell's law of refraction

n1 sinθ1 = n2 sinθ2


Lens Power

P = 1 / f


Photon Nrg

E = h f
or E = hc/λ h= 6.6x10^34 J*s h= 4x10^15 eV 

Binding Nrg

E = Δm c^2


Alpha Particle decay

4
2 

Beta decay

+0
+1 

+Beta decay (positron)

0
1 

Gamma decay

nothing!!


1/2 life formula

Nf = Ni * e^(λt)


Capacitance

C = k*(perm. free space)* (A/d)
A=area d=distance b/n plates 

Work done by gas expansion

W = P*ΔV
