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MCAT Formulas & Units > Physics Formulas > Flashcards

Physics Formulas Flashcards

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MCAT flashcards
1
Q

Force

A

F.net = ma

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2
Q

Component vectors

A

X = V * cos(theta)
Y = V * sin(theta)

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3
Q

Pythagorean Theorem

A

A^2 + B^2 = C^2

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4
Q

Determination of direction from component vectors

A

(theta) = tan^-1 Y/X

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5
Q

Dot Product

A

|A|*|B|cos(theta)

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6
Q

Cross Product

A

|A|*|B|sin(theta)

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7
Q

Average Velocity

A

v = (delta)x/(delta)t

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8
Q

Universal gravitational Equation

A

F = Gm.1m.2/r^2

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9
Q

Static Friction

A

0 <= f.s <= (mu.s)N

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10
Q

Kinetic Friction

A

f.k = (mu.k)N

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11
Q

Newton’s First Law

A

F.net = ma = 0

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12
Q

Newton’s Second Law

A

F.net = ma

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13
Q

Newton’s Third Law

A

F.AB = -F.BA

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14
Q

Kinematics (no displacement)

A

v = v.0 + at

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15
Q

Kinematics (no final velocity)

A

x = v.0t + at^2 / 2

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16
Q

Kinematics (no time)

A

v^2 = v^2.0 + 2ax

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17
Q

Kinematics (no acceleration)

A

x = v.average * t

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18
Q

Component of Gravity on Inclined Plane

A

F.g.parallel = mg * sin(theta)
F.g.perpindicular = mg * cos(theta)

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19
Q

Centripetal Force

A

F.c = mv^2 / r

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20
Q

Torque

A

T = r X F = rF*sin(theta)

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21
Q

Kinetic Energy

A

K = 1/2 mv^2

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22
Q

Gravitational Potential Energy

A

U = mgh

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23
Q

Elastic Potential Energy

A

U = 1/2 kx^2

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24
Q

Total Mechanical Energy

A

E = U + K

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25
Q

Conservation of mechanical Energy

A

(delta)E = (delta)U + (delta)K = 0

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26
Q

Work done by nonconservative Forces

A

W.nonconservative = (delta)E

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27
Q

Definition of Work (mechanical)

A

W = F (dot) d = Fd cos(theta)

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28
Q

Definition of Work (isobaric gas-piston)

A

W = P (delta)V

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29
Q

Definition of power

A

P = W/t

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30
Q

Work-Energy Theorem

A

W.net = (delta)K

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31
Q

Mechanical Advantage

A

F.out/F.in

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32
Q

Efficiency

A

W.out/W.in

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33
Q

Fahrenheit to Celsius

A

F = 9/5 C + 32

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34
Q

Celsius to Kelvin

A

K = C + 273

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35
Q

Thermal Expansion Equation

A

(delta)L = (alpha) * L * (delta)T

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36
Q

Volume Expansion Equation

A

(delta)V = (beta) * V * (delta)T

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37
Q

First Law of Thermodynamics

A

(delta)U = Q - W

38
Q

Heat gained of lost with temp change

A

q = mc (delta)T

39
Q

Heat gained of lost (phase change)

A

q = mL

40
Q

Entropy and heat

A

(delta)S - Q.rev/T

41
Q

Second Law of Thermodynamics

A

(delta)S.universe = (delta)S.system + (delta)S.surroundings > 0

42
Q

Density

A

(rho) = m/V

43
Q

Weight of Volume of Fluid

A

F.g = (rho) * Vg

44
Q

Specific Gravity

A

SG = (rho) / (1 g/cm^3)

45
Q

Pressure

A

P = F/A

46
Q

Absolute Pressure

A

P = P.0 + pgz

47
Q

Gauge Pressure

A

P.gauge = P- P.atm = (P.o + pgz) - P.atm

48
Q

Pascal’s principle

A

P = F.1/A.1 = F.2/A.2

F.2 - F.1 (A.2/A.1)

49
Q

Buoyant force

A

F.bouy = (rho).fluid * V.fluiddisplaced * g = (rho).fluid * V.submerged * g

50
Q

Poiseuille’s Law

A

Q = (pi) * r^4 (delta)P / (8(eta)L)

51
Q

Critical speed

A

V.c = N.R * (eta) / ((rho) * D)

52
Q

Continuity Equation

A

Q = v.1 * A.1 = V.2 * A.2

53
Q

Bernoulli’s Equation

A

P.1 + 1/2 (rho) * v.1^2 + (rho)gh.1 = P.2 + 1/2 (rho) * v.2^2 + (rho)gh.2

54
Q

Coulomb’s Law

A

F.e = kq.1q.2 / r^2

55
Q

Electric field

A

E = F.e / q = kQ / r^2

56
Q

Electric Potential Energy

A

U = kQq / r

57
Q

Electric Potential (from electric Potential Energy)

A

V = U/q

58
Q

Electric Potential (from source charge)

A

V = kQ/r

59
Q

Voltage

A

(delta)V = W.ab / q

60
Q

Electric Potential near dipole

A

V = kqd / r^2 * cos(theta)

61
Q

Dipole Moment

A

p = qd

62
Q

Electric field on perpendicular bisector of dipole

A

E = 1 / (4(pi)(epsilon).0) x p / r^3

63
Q

Torque on dipole in electric field

A

T = pE sin(theta)

64
Q

Magnetic field form straight wire

A

B = (mu).0 * I / (2(pi)r)

65
Q

Magnetic field from wire loop

A

B = (mu.0) * I / (2r)

66
Q

Magnetic force on moving point charge

A

F.B = qvB sin(theta)

67
Q

Magnetic force on current-carrying wire

A

F.B = ILB sin(theta)

68
Q

Current

A

I = Q / (delta)t

69
Q

Kirchoff’s junction rule

A

I.intojunction = I.leavingjunction

70
Q

Kirchhoff’s loop rule

A

V.source = V.drop

71
Q

Definition of resistance

A

R = (rho)*L / A

72
Q

Ohm’s law

A

V = IR

73
Q

Voltage and cell emf

A

V - E.cell - ir.int

74
Q

Definition of Power

A

P = W/t

75
Q

Electric Power

A

P = IV = I^2 *R = V^2 / R

76
Q

Voltage drop across circuit elements (series)

A

V.s = V.1 + V.2 + … + V.n

77
Q

Voltage drop across circuit elements (parallel)

A

V.p = V.1 = V.2 = … = V.n

78
Q

Equivalent resistance (series)

A

R.s = R.1 + R.2 + … + R.n

79
Q

Equivalent resistance (parallel)

A

1/R.p = 1/R.1 + 1/R.2 + … + 1/R.n

80
Q

Def’n of Capacitance

A

C = Q/V

81
Q

Capacitance based on parallel plate geometry

A

C = (epsilon).0 * (A/d)

82
Q

Electric field in a capacitor

A

E = V/d

83
Q

Potential Energy of Capacitor

A

U = 1/2 C * V^2

84
Q

Capacitance with dielectric material

A

C’ = (kappa)*C

85
Q

Equivalent Capacitance (series)

A

1/C.s = 1/C.1 + 1/C.2 + … + 1/C.n

86
Q

Equivalent Capacitance (parallel)

A

C.p = C.1 + C.2 + … + C.n

87
Q

Concentration of Solution post dilution

A

M.iV.i = M.fV.f

88
Q

Boiling Point Elevation

A

delta.T.b = iK.bm

89
Q

Osmotic Pressure

A

II = iMRT

90
Q
A

MCAT Formulas & Units (5 decks)

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