Physics Flashcards

1
Q

Equations for Velocity

A

v = vi + a*t

v^2= vi^2 + 2ax

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2
Q

Equation for Position

A

x = xi + vit + .5at^2

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3
Q

Rational Velocity Equations

A

w = wi + a*t

w^2 = wi^2 + 2a*theta

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4
Q

Rotational Position

A

theta = theta-initial + wit + .5at^2

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5
Q

Angular Acceleration Equations

A

a = Torque / I ( ‘I’ is rotational inertia )

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6
Q

Torque

A

T = r*Fsin(theta)

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7
Q

Impulse

A

J = change in momentum = F*t

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8
Q

Work and Power

A

W = F*dcos(theta) = change in Energy

P = E/t = W/t

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9
Q

Harmonic Motion

A

x = Acos(wt) w = 2pi*f

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10
Q

Center of Mass

A

x = Sum ( mi*xi ) / Sum ( mi )

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11
Q

Angular Momentum

A

L = I*w ( ‘I’ is rotational Inertia )

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12
Q

Angular Impulse

A

L - Torque * t

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13
Q

Angular KE

A

K = .5Iw^2

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14
Q

Work ( Circular motion)

A

W = F*rcos(theta)

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15
Q

Power (circular motion)

A

P = Fvsin(theta)

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16
Q

Spring Force

A

[F] = k*[x]

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17
Q

Spring Potential Energy

A

U = .5kx^2

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18
Q

Period of Oscillating Spring

A

T = 2piroot(m/k)

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19
Q

Period of Simple Pendulum

A

T = 2piroot(L/g)

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20
Q

Electric Field Strength Equations

A

E = F/q

[E] = (1/4pieo) * [q]/ r^2

[E] = [ V/r ]

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21
Q

Electric Field Force

A

[F] = (1/4pieo) * q1q2/ r^2

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22
Q

Electric Potential Energy

A

U = qV

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23
Q

Voltage

A

V = (1/4pieo) * q/r

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24
Q

Capacitor Voltage

A

V = Q/C

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25
Q

Capacitance

A

C = keo(A/d) k is the dielectric constant
A is area
d is distance

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26
Q

Capacitor Electric Field

A

E = Q/eo*A

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27
Q

Capacitor Potential Energy

A

U = .5* QV = .5* CV^2

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28
Q

Current

A

I = Q/t

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29
Q

Resistance

A

R = ro*L/A

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30
Q

Power (Electrical)

A

P = I*V

31
Q

Resistors in Series

A

Sum R

32
Q

Resistors in Parallel

A

Sum 1/R

33
Q

Capacitors in Parallel

A

Sum C

34
Q

Capacitors in Series

A

Sum 1/C

35
Q

Magnetic Field Strength

A

B = uoI / 2pi*r

36
Q

Magnetic Force Equations

A

F = qv x B = [qvsin(theta)B]

F = IL x B = [ILsin(theta)B]

37
Q

Magnetic Flux

A

Phi = BA*cos(theta)

38
Q

Electromagnetic Induction

A

e = -Phi/ t = BLv

39
Q

Density

A

ro = m/Vol

40
Q

Pressure

A

P = F/A

41
Q

Absolute Pressure

A

P = Po + rogh

42
Q

Buoyant Force

A

F = ro* Vol* g

43
Q

Fluid Continuity Equation

A

A1v1 = A2v2

44
Q

Heat Conduction

A

Q/t = kAT/d k is thermal conductivity

T is temperature

45
Q

Ideal Gas Law

A

PV = nRT = nkbT

46
Q

Average Energy

A

K = 3/2 * kb* T

47
Q

Work (thermal)

A

W = -PV

48
Q

Internal Energy

A

U = Q + W Q is energy transferred by heating

W is work done by system

49
Q

Linear Expansion

A

L =aLo T

50
Q

Heat Engine Efficiency

A

nc = [W/Q]

51
Q

Carnot Heat Engine Efficiency

A

nc = Th - Tc / Th

52
Q

Energy of Temperature Change

A

Q = mcT

53
Q

Energy of Phase Change

A

Q = mL

54
Q

Index of Refraction

A

n = c/v

55
Q

Thin Lens Equation

A

1/s + 1/si = 1/f

56
Q

Magnification

A

M = [hi/ho] = [si/so]

57
Q

Double Slit Diffraction

A

dsin(theta) = mlambda

L = m*lambda

58
Q

Critical Angle

A

sin(theta) = n2/n1

59
Q

Focal Length for Spherical Mirror

A

f = R/2

60
Q

Standing Wave/ Open Pipe Harmonics

A

lambda = 2L/n

61
Q

Closed Pipes Harmonics

A

lambda = 4L/n

62
Q

Harmonic Frequencies

A

f = n* f_1

63
Q

Speed of Sound in Ideal Gas

A

v = root ( yRT/M) T is tension
M is molecular mass
y is adiabatic constant

64
Q

Speed of Wave in Wire

A

v =root (TL/m)

65
Q

Doppler (approaching)

A

fo = (v/ v-vs)* fs

66
Q

Doppler (receding)

A

fo = (v/ v+vs)* fs

67
Q

Photon Energy

A

E =hf

68
Q

Photoelectric Electron Energy

A

Kmax = hf - phi

69
Q

Electron Wavelength

A

lambda = h/p

70
Q

Rydberg Formula

A

1/lambda = R( 1/nf^2 - 1/ni^2 )

71
Q

Balmer Formula

A

lambda = B(n^2/ n^2 -4)

72
Q

Lorentz Factor

A

gamma = 1/ root (1 - v^2/c^2)

73
Q

Relativistic Mass

A

M = mo* gamma