physics equations Flashcards by reva b | Brainscape

Q

work done

A

force x distance moved (w = fd)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

power

A

work done or energy transferred/ time taken

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

GPE

A

mass x g x change in height

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

kinetic energy

A

0.5 x mass x velocity (or speed^2)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

wave speed

A

frequency x wave length

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

frequency

A

1/ time period

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

period

A

1/ frequency

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

angle of incidence

A

= angle of reflection

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

refractive index

A

sin(i)/ sin(r)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

sin(critical angle)

A

1/ refractive index

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

density

A

mass/ volume

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

pressure

A

force /area

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

pressure difference

A

g x depth x density

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

change in thermal energy

A

mass x SHC x change in temperature

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

SHC

A

energy / mass x change in temperature

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

power

A

current x volatage

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

energy

A

current x voltage (power) x time

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

energy transferred / charge

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

voltage

A

current x resistance

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

speed

A

distance / time

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

acceleration

A

change in velocity / time

Q

final velocity

A

initial velocity^2 + 2 x acceleration x displacement

Q

weight

A

mass x g

Q

force

A

mass x acceleration

Q

momentum

A

mass x velocity

Q

moment

A

force x perpendicular distance from pivot

Q

force

A

change in momentum / time taken

Q

efficiency

A

useful energy transferred / total energy input x 100

Q

pressure law

A

pressure 1 / temp 1 = pressure 2 / temp 2

Q

boyle’s law

A

pressure 1 x volume 1 = pressure 2 x volume 2

Q

secondary voltage / primary voltage

A

no. turns on second coil / no. turns on primary coil

Q

voltage 1 x current 1

A

voltage 2 x current 2

Q

unit power

A

watts (W)

Q

unit current

A

amperes (A)

Q

unit voltage

A

volts (V)

Q

unit energy

A

joules (J)

Q

unit time

A

seconds (s)

Q

unit charge

A

coulombs (C)

Q

unit resistance

A

ohms

Q

unit speed or velocity

A

m/s

Q

velocity is vector because

A

direction is accounted for

Q

unit acceleration

A

m/s^2

Q

unit displacement or distance

A

meters (m)

Q

unit weight

A

newtons (N)

Q

unit mass

A

grams (g)

Q

unit grav field strength

A

N/kg

Q

unit momentum

A

kgm/s or gcm/s

Q

unit frequency

A

hertz (Hz)

Q

unit density

A

kg/m^3 or g/cm^3

Q

unit pressure

A

pascal (Pa)

Q

unit specific heat capacity

A

J/ kgk or kg*c

Q

unit temperature

A

kelvin (K) or celcius (*c)