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MCAT equations > Physics > Flashcards

Physics Flashcards

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MCAT flashcards
1
Q

x = 1/2 (vi + vf )t

A

Δx - displacement
t - time
vi - initial velocity
vf - final velocity

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2
Q

vf = vi + at

A

a - acceleration
t - time
vi - initial velocity
vf - final velocity

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3
Q

Δx = vi t + 1/2 at^2

A

a - acceleration
Δx - displacement
t - time
vi - initial velocity

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4
Q

v final ^2 = v initial^2 + 2aΔx

A

a - acceleration
Δx - displacement
vi - initial velocity
vf - final velocity

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5
Q

Newton’s 1st law

A

interia

objects at motion stay at motions unless acted on

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6
Q

Newtons 2nd Law

A

F = ma

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7
Q

Newtons 3rd Law

A

Equal and opposite reactions

FAB = - FBA

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8
Q

Static Friction

A

Fmax = μs x N

Fmax - maximum static friction force
N - normal force
ųs - coefficient of static friction

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9
Q

Kinetic Friction

A

Fkinetic = ųk x N

Fkinetic - kinetic friction force
N - normal force
ųk - coefficient of kinetic friction

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10
Q

Gravitational formula

A

Fgrav = G m1m2/ r^2

F grav - gravitational force
G - universal gravitational constant
m - mass of first and second objects

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11
Q

Centripetal acceleration

A

a = v^2/r

a - centripetal acceleration
v - velocity
r - distance of an object from the center of orbit

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12
Q

Centripetal force

A

Fc = mv^2/r

Fc - centripetal force
m - mass of an object
v - velocity
r - distance of an object from the center of orbit

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13
Q

Hookes Law

A

Fspring = -kx

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14
Q

Troque

A

τ = F · d · sin(θ)

τ - torque
F - applied force
d - lever arm (distance from fulcrum)
θ - angle between applied force and lever arm

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15
Q

Work

A

W = | F | · d · cos(θ)

W - work
F - applied force
d - displacement over which the force is applied
θ - angle between applied force and displacement

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16
Q

Power

A

P = W/Δt

P - power
W - work or change in energy
Δt - time

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17
Q

Kinetic Energy

A

1/2mv^2

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18
Q

Potential Energy

A

mgh

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19
Q

Elastic potential energy (spring)

A

1/2kx^2

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20
Q

Conversation of energy

A

KE intial + PE intital = KE final + PE final

21
Q

Work-Energy theorem

A

W = ΔKE = KEfinal - KEinitial

22
Q

Work (Pressure-Volume curve)

A

W = PΔV

23
Q

First Law of Thermodynamics

A

Conservation of energy

ΔU = Q - W

ΔU - change in internal energy of the system
Q - heat entering the system
W - work done by the system

24
Q

Ideal Gas Law

A

PV = nRT

25
Q

Density

A

ρ = m/V

ρ - density
m - mass
V - volume

26
Q

Specific gravity

A

ρ/ρwater

27
Q

Pressure

A

P = force/area

28
Q

Hydrostatic pressure

A

Psub = ρgh

Sub = gauge pressure

29
Q

Absolute pressure

A

Pabs = Patm + ρgh

30
Q

Part of object submerged

A

ρobject/ ρliquid · 100

31
Q

Buoyant Force

A

Fbuoy = ρVg

32
Q

Pascals Law - pressure

A

P= F1/A1= F2/A2

F=force
A=area

33
Q

Pascals Law = work

A

W = F1d1= F2d2

W - work
F - Force
d - displacement

34
Q

Coulombs Law

A

F = kq1q2/r^2

F - electrostatic force
k - Coulomb’s constant
q - charge of a particle
r - distance between charges

35
Q

Ohms Law

A

V = IR

V - voltage
I - current
R - resistance

36
Q

Current in series

A

Itotal = I1 = I2 = … = In

37
Q

Voltage in series

A

Vsource = V1 + V2 + … + Vn

38
Q

Resistance in series

A

Rtotal = R1 + R2 + … + Rn

39
Q

Current in parallel

A

Itotal = I1 + I2 + … + In

40
Q

Voltage in parallel

A

Vtotal = V1 = V2 = … = Vn

41
Q

Resistance in parallel

A

1/Rtotal = 1/R1+ 1/R2 + … + 1/Rn

42
Q

Capacitance

A

C = Q/V

C - capacitance
Q - charge stored in capacitor
V - voltage across capacitor

43
Q

Velocity of a wave

A

v = wavelength x frequency

44
Q

Doppler effect

A

f΄= f0(vsound+ vobserver /(vsound + vsource)

45
Q

Standing wave for a string or pipe open at both ends

A

wavelength = 2L/n

46
Q

Standing wave for a pipe closed at one end

A

wavelength = 4L/n(odd)

47
Q

Rydberg Equation

A

1/λ = R ( 1/n1^2 - 1/n2^2)

R - the Rydberg constant
n - orbital levels
λ - wavelength of photon

48
Q

Half life

A

t1/2 = 0.693/decay constant

MCAT equations (3 decks)

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