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78 Cards in this Set

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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