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Physics > Equations > Flashcards

Equations Flashcards

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1
Q

What is the equation for density?

A

Density = mass

volume

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2
Q

What is the equation for distance?

A

Distance travelled = speed x time

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3
Q

What is the equation for acceleration?

A

Acceleration = change in velocity

time

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4
Q

What is the equation for kinetic energy?

A

2

0.5 x mass x speed

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5
Q

What is the equation for force?

A

Force = mass x acceleration

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6
Q

What is the equation for momentum?

A

Momentum = mass x velocity

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7
Q

What is the equation for work done?

A

Work done = force x distance

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8
Q

What is the equation for power using work done?

A

Power = work done

time

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9
Q

What is the equation for the force exerted by a spring?

A

Extension x spring constant

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10
Q

What is the equation for weight?

A

Mass x gravitational field strength

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11
Q

What is the equation for gravitational potential energy?

A

Potential energy = mass x height x gravitational field strength

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12
Q

What is the equation for pressure?

A

Pressure = force normal to surface/ area of that surface

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13
Q

What is the equation for a moment of a force?

A

Moment = force x distance (normal to direction of force)

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14
Q

What is the equation for charge flow?

A

Charge = current x time

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15
Q

What is the equation for resistance?

A

Resistance = potential difference

current

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16
Q

What is the equation for energy transferred using charge?

A

Energy transferred = charge x potential difference

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17
Q

What is the equation for power using resistance?

A

2

Power = current x resistance

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18
Q

What is the equation for power using energy transferred?

A

Power = energy transferred / time

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19
Q

What is the equation for wave speed?

A

Wave speed = frequency x wavelength

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20
Q

What is the equation for efficiency?

A

Efficiency = useful output energy transfer/ input energy transfer x 100%

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21
Q

SI unit of mass

A

Kg

22
Q

SI unit of length

A

M

23
Q

SI unit of density

A

3

Kg/m

24
Q

SI unit of volume

A

3

M

25
Q

SI unit of speed

A

M/s

26
Q

SI unit of time

A

S

27
Q

SI unit of acceleration

A

2

m/s

28
Q

SI unit of force

A

N

29
Q

SI unit of kinetic energy

A

J

30
Q

SI unit of velocity

A

m/s

31
Q

SI unit of momentum

A

kgm/s

32
Q

SI unit of work done

A

J

33
Q

SI unit of power

A

W

34
Q

SI unit of extension

A

m

35
Q

SI unit of spring constant

A

N/m

36
Q

SI unit of gravitational field strength

A

N/kg

37
Q

SI unit of pressure

A

Pa OR N/m

38
Q

SI unit of a moment

A

Nm

39
Q

SI unit of charge

A

C

40
Q

SI unit of current

A

A

41
Q

SI unit of resistance

A

Ω

42
Q

SI unit of potential difference

A

V

43
Q

SI unit of frequency

A

Hz

44
Q

What is the equation for change in thermal energy using specific heat capacity?

A

mass x specific heat capacity x temperature change

45
Q

what is the SI unit for specific heat capacity

A

J/kg degrees C

46
Q

What does the greek letter delta mean? (it’s a triangle)

A

change in

47
Q

What is the equation for energy produced by an immersion heater?

A

energy = current x time x voltage

48
Q

what is the equation for thermal energy using specific latent heat?

A

energy = mass x specific latent heat

49
Q

What is the equation for pressure at a certain depth of liquid?

A

Height/depth x density of liquid x gravitational field strength

50
Q

What is the equation for the pressure difference at two points in a liquid

A

Depth difference of the two points x density of the liquid x gravitational field strength

51
Q

What is the equation for work done to stretch a spring?

A

Work done = 0.5 x spring constant x extension^2

Physics (9 decks)

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