Equations Flashcards

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1
Q

Equation for force?

A

Mass X acceleration

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2
Q

Equation for weight?

A

Mass X gravity

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3
Q

Equation for speed?

A

distance / time

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4
Q

Equation for momentum?

A

Mass X velocity

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5
Q

Equation for acceleration?

A

Change in velocity / time

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6
Q

Equation for power?

A

Current X voltage

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7
Q

Equation for charge?

A

Current X time

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8
Q

Equation for energy? (electricity)

A

Power X time

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9
Q

Equation for voltage?

A

Current X resistance, Power / current

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10
Q

Equation for density?

A

Mass / volume

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11
Q

Equation for pressure?

A

Force / area

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12
Q

Equation for pressure difference?

A

Height X density X gravity

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13
Q

Equation for work done?

A

Force X distance

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14
Q

Equation for efficiency?

A

Useful output / total input (x100)

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15
Q

Equation for orbital speed?

A

2(pi)r / time

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16
Q

Equation for GPE?

A

Mass X gravity X height

17
Q

Equation for kinetic energy?

A

1/2 X mass X velocity^2

18
Q

Equation using primary/secondary turns and primary/secondary voltage?

A

Primary turns / secondary turns = primary voltage / secondary voltage

19
Q

Equation for transformers, using voltage and current?

A

Primary voltage X primary current = secondary voltage X secondary current

20
Q

Equation for wave speed?

A

Frequency X wavelength

21
Q

Equation for moments?

A

Force X distance from pivot

22
Q

Equation for refractive index?

A

n = Sin(i) / sin(r)

23
Q

Equation linking the critical angle and refractive index?

A

SinC = 1 / n

24
Q

Equation for wave speed?

A

Frequency X wavelength

25
Q

Equation for moments?

A

Force X distance from pivot

26
Q

Equation for refractive index?

A

n = Sin(i) / sin(r)

27
Q

Equation linking the critical angle and refractive index?

A

SinC = 1 / n