ESAT Physics Formulae

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30 Terms

1

Current

I = Q/t

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2

Voltage 1

V = E/Q

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3

Voltage 2

V = IR

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4

Power

P = IV = I²R = V²/R

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5

Energy

E = ItV

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6

Total Resistance (3)

R = 1/R1 + 1/R2 + 1/R3…

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7

Total Resistance (2)

R = (R1 * R2)/(R1 + R2)

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8

Total Resistance (any identical)

R = R1/n

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9

Series Circuits

R1/R2 = V1/V2

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10

Transformers

n1/n2 = V1/V2

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11

Velocity

v = s/t

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12

Acceleration

a = change in v / t

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13

Work

W = mg

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14

Force

F = ma

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15

Work/Energy

E = Fd

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16

Power

P = E/t

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17

Pressure

P = F/A

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18

Potential Energy

PE = mgh

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19

Kinetic Energy

KE = 1/2mv²

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20

Momentum

p = mv

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21

Wave Speed

c = fλ

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22

Wave Bounce

Angle of incidence = angle of reflection

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23

Density

q = m/v

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24

Efficiency

Efficiency = useful out / total in

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25

Resistance of wire

R = pL/a

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26

Final velocity

Vf = Vi + at

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27

Final velocity²

Vf² = Vi² + 2ad

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28

Distance

x = Vit + 1/2at²

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29

No acceleration distance

d = 1/2 (vi + Vf)t

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30

Magnetic flux density

F = BILcos()

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