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36 Cards in this Set
- Front
- Back
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Density
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ρ = m/ V ρ = Density, kg/m^3 m = Mass, kg V = Volume, m^3 |
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weight
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weight= mass x gravity mass= kg gravity= ms^-2 weight unit= Newton, N |
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Linear Expansion
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ΔL = α L ΔT ΔL= Change in length, m α= Linear expansivity, K^-1 L= Length, m ΔT= Change in Temperature, K (°C) |
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Kelvin
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Kelvin = °C + 273
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Combined Gas Laws |
P1V1/T1=P2V2/T2 P= Pressure, (Pa/PSI/mmHg) V= Volume, (cm^3,m^3,mL,L) T= Temperature, Kelvin |
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Specific Heat
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Q= m c ΔT Q= heat energy, Joules, J m= mass, kg c= specific heat capacity, J/kg °C ΔT = change in temperature. °C |
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Latent heat
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Q = m Lf Q = m Lv Q = Heat energy, J m = mass, kg Lf = latent heat of fusion, J kg^-1 Lv = latent heat of vapourisation, J kg^-1 |
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Potential Difference (voltage) |
V=E/Q V=voltage, V, volts E= energy, Joules, J Q=Charge, coulombs, C |
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Ohm's law |
V=IR V=potential difference, V ,volts I= current, A , Amps R= resistance, Ω, Ohms |
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Resistance
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R = ρ L /A R = Resistance, Ω (Ohms) ρ= Resistivity Of The Material, Ωm L = Length, m (Meters) A= Cross Sectional Area, m^2 |
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Voltage Out Potential divider |
Vout= Vin x R2 /R1 + R2 V = Voltage, V R= Resistance, Ω |
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Kinetic Energy |
Ek= 1/2 mv^2 m= mass, kg v= velocity, ms^-1 Ek= kinetic energy, J |
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Hookes Law |
F=kx F= force, N k= spring extension, Nm^-1 x= Extension, m |
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Torque (turning force)
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τ= F d τ = Torque (moment), Nm F = Force, N d = Perpendicular distance, m |
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Work
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W=Fd W= work, J F= force, N d= distance, m |
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Power (mechanical)
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P=W/t P= power, W W= work, J t= time, s |
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Pressure
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P=F/A P= pressure, Pa, Nm^2 F= force, N A= cross section area, m^2 |
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Fluid Pressure
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P = ρgh P = Pressure, Pa ρ= Density Of Fluid, kgm^-3 g = Acceleration Due To Gravity, ms^-2 h = Height Of Fluid, m |
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Atmospheric Pressure |
101.3 KPa or 760 mm Mercury, Hg |
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Speed of light
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3x10^8 ms^-1
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Refractive Index
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n= c/v n= refractive index, ms^-1 c= speed of light, ms^-1 v= speed of light in medium, ms^-1 |
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Snell’s Law
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n1 sin Θ1 = n2 sin Θ2 n = Refractive index of medium Θ = Angle of incidence, ° |
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Magnification
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m = hi/ho=di/do m = Magnification hi = Image Height, m ho= Object Height, m di = Image Distance, m (from lens) do= Object Distance, m |
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Frequency |
f=1/T f= frequency, Hz, s^-1 T= time period, s |
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Wave Equation |
v = f λ v = Velocity Of Wave, ms-1 f = Frequency Of Wave, Hz (s-1) λ = Wave Length of wave, m |
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Resistor in PARALLEL |
1/Rtotal= 1/R1 + 1/R2 + 1/R3 R= resistance |
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Power (electricity) |
P=VI P= power, W V= Voltage, V I= Current, I |
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Energy |
E= Pt E= energy, J P= power, W t= time, s |
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Current |
I= Q/t I=current, Amps, A Q= charge, C t= time, s |
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Force
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F=ma F= force, N m= mass, kg a= acceleration, ms^-2 |
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Centripetal Force
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Fc= mv^2/r Fc= centripetal force, N m= mass, kg v= velocity, ms^-1 r= radius, m |
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Gravitation POTENTIAL Energy
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Ep= mgh Ep= potential energy, J m= mass, kg g= gravity,10ms^-2 h= height, m |
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Velocity
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v = Δd/ Δt v= velocity, ms^-1 Δd= change in distance (displacement), m Δt = change in time, s |
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Accerelation |
a= Δv / Δt a= acceration, ms^-2 Δt = change in time, s Δv = change in speed, ms^-1 |
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Efficiency
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Efficiency = Energyout / Energyin x 100 Energyout = Useful energy output, J Energyin = Energy input, J |
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Transformer |
N1/N2 = V1/V2 = I2/I1
N1 = Number of turns in first coil N2 = Number of turns in second coil V1 = Voltage in first coil V2 = Voltage in second coil I1 = Current in first coil I2 = Current in second coil |
