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COPY IGCSE Physics > Formulas only > Flashcards

Formulas only Flashcards

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1
Q

force

A

mass x acceleration

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2
Q

weight

A

mass x gravity

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3
Q

velocity / speed

A

distance/time

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4
Q

acceleration

A

change in velocity/change in time

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5
Q

density

A

mass/volume

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6
Q

P1V1

A

P2V2

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7
Q

relationship between volume and pressure

A

inversely proportional

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8
Q

Pressure (in terms of volume)

A

P ∝ 1/v

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9
Q

power (in terms of work)

A

work done/time taken

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10
Q

power (in terms of energy)

A

change in energy/time taken

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11
Q

pressure

A

force/area

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12
Q

pressure in liquids

A

density x gravity x depth

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13
Q

current

A

charge/time

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14
Q

potential difference

A

work done/charge

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15
Q

what is ohm’s law?

A

voltage = current x resistance

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16
Q

resistance

A

voltage/current

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17
Q

power (in terms of current)

A

current x voltage

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18
Q

energy (in terms of voltage)

A

voltage x current x time

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19
Q

heat energy

A

mass x specific heat capacity x temperature change

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20
Q

efficiency

A

(useful energy output/energy input) x 100

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21
Q

wave speed

A

frequency x wavelength

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22
Q

frequency

A

number of oscillations/time taken

23
Q

frequency (in terms of T, time for 1 oscillation)

A

1/T

24
Q

refractive index (using sine)

A

sin i/sinr

25
Q

refractive index (in terms of wave speed)

A

v1/v2

26
Q

refractive index (in terms of critical angle)

A

1/sin c

27
Q

mega is

A

x one million

28
Q

kilo is

A

x one thousand

29
Q

milli is

A

divide by one thousand

30
Q

unit for force/weight

A

N

31
Q

unit for temperature

A

degrees C or K

32
Q

unit for velocity/speed

A

m/s
km/h

33
Q

unit for current

A

Amps (A)

34
Q

unit for charge

A

Coulombs (C)

35
Q

unit for power

A

watts (W)

36
Q

unit for pressure

A

Pascals (Pa)
N/cm squared

37
Q

unit for electrical energy

A

kWh (kilowatt hour)

38
Q

unit for mass

A

g
kg

39
Q

unit for frequency

A

Hertz (Hz)

40
Q

unit for acceleration

A

m/s squared

41
Q

unit for p.d (voltage)

A

Volts (V)

42
Q

unit for resistance

A

Ohms (omega symbol)

43
Q

unit for density

A

g/cm cubed
kg/m cubed

44
Q

unit for work + all energy types

A

Joules (J)

45
Q

unit for specific heat capacity

A

J/kg C
J/g C

46
Q

converting between kelvin and celsius

A

T (in K) = T (in ºC) + 273

47
Q

pressure

A

P= F/A

Pressure (Pa) = Force (N) / Area (m2)

48
Q

change in pressure (beneath surface of liquid)

A

Δp=ρgΔh

Change in pressure = density x gravitational force x change in height/depth

49
Q

boyle’s law

A

P1V1=P2V2

ONLY WHEN TEMPERATURE IS CONSTANT

50
Q

unit for pressure

A

Pascal (Pa)

51
Q

constant (pressure)

A

pV = constant

52
Q

change in energy

A

Energy(J)= mass (kg) x Specific Heat Capacity (J/kg°C) x Change in Temperature (°C)

53
Q

specific heat capacity

A

c = ΔE / mΔt

54
Q

density

A

p = m/v

density = mass / volume

COPY IGCSE Physics (9 decks)

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