Key Equations Flashcards by Aneurin Quinn Evans

Q

Pressure of a substance

A

Depth x density x gravity

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Pressure exerted

A

Force/area

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Energy (electrical)

A

Voltage x current x time

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Pressure and volume

A

P1V1 = P2V2

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Pressure and temperature

A

P1/T1 = P2/T2

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Frequency

A

1/time

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Power

A

Work (energy) / time

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Impulse of an action

A

Final momentum - initial momentum

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Impulse

A

Force x time

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Momentum

A

Mass x velocity

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Kinetic energy

A

1/2 (mass x velocity^2)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Gravitational potential energy

A

Mass x gravity x height

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Weight

A

Mass x gravity

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Moment

A

Force x distance from pivot

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Charge

A

Current x time

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Voltage

A

Current x resistance

Q

Speed

A

Distance / time

Q

Force

A

Mass x acceleration

Q

Acceleration

A

(Final velocity - initial velocity) /time

Q

Density

A

Mass/volume

Q

Work done

A

Force x distance

Q

Power electrical

A

Voltage x current

Q

Wave speed

A

Frequency x wave length

Q

Voltage, number of coils, current

A

Vp/Vs = Np/Ns = Cp/Cs

Q

Refractive index

A

Sin(angle of incidence) / sin(angle of refraction)

Q

Sin(critical angle)

A

1/refractive index

Remember x sin

Q

Efficiency

A

(Useful energy output / total energy input) x 100%

Q

Power (of a motor)

A

Current x voltage