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Physics GCSE > All Equations > Flashcards

All Equations Flashcards

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1
Q

What is the pressure equation which includes force and area?

A

p=F/A

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2
Q

What is the equation for kinetic energy, what does each symbol stand for and what are the units?

A
  • KE = 1/2 mv2
  • KE = Kinetic energy (J)
  • m = Mass (kg)
  • v = Speed
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3
Q

What is the equation for refractive index and what are the units?

A
  • n = Sin(i)/Sin(r)
  • n = Refractive index
  • Sin(i) = Angle of incidence
  • Sin(r) = Angle of refraction
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4
Q

What is the equation for weight?

A

W=mg

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5
Q

What is the equation for resistance (R)?

A

R=V/I

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6
Q

What is the equation for Hooke’s law which starts with force applied (F)?

A

F=kx

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7
Q

What is the equation for Kinetic to Gravortational?

A
  • 1/2 mv2 = mgh
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8
Q

What is the wave equation that includes time period (T)?

A

f=1/T

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9
Q

What is the equation for stopping distance?

A

Stopping distance=Thinking distance+Braking distance

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10
Q

What is the equation for power that includes work and time?

A
  • P = W/t
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11
Q

What is the pressure equation that includes gravity and height?

A

p=ρgh

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12
Q

What is the equation for speed (S)?

A

S=d/t

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13
Q

What is the equation for calculating a moment?

A

Moment=Fd

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14
Q

What is the orbital speed equation?

A

v=2πr/T

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15
Q

What is the density equation?

A

ρ=m/V

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16
Q

What is the wave equation starting with velocity (v)?

A

v=fλ

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17
Q

What is the equation for Specific heat capacity and what does each symbol mean?

A
  • Q=mcΔT
  • Q = Energy (J)
  • m = Mass (kg)
  • c = Specfic heat capacity (J/kg°c)
  • Δ = Change in temperature (°c)
18
Q

What is the equation for moments that only works in equilibrium and what does each letter stand for?

A
  • F1 d1 = F2 d2
  • F1 = Clockwise force (N)
  • d1 = Distance from pivot to clockwise force (m)
  • F2 = Anticlockwise force (N)
  • d2 = Distance from pivot to the anticlockwise force (m)
19
Q

What is the equation for acceleration (a)?

A

a=v-u/t

20
Q

What is the equation for work, what does each symbol stand for, and what are the units?

A
  • W = Fd
  • W = Mechanical work done (J)
  • F = Force (N)
  • d = Distance (m)
21
Q

What is the equation for gravortational energy, what does each symbol stand for and what are the units?

A
  • GPE = mgh
  • GPE = Change in GPE (J)
  • m = Mass (kg)
  • g = Gravortational field strength (N/kg)
  • h = Change in height (m)
22
Q

What is the equation for power consumption that includes energy and time?

A

P=E/t

23
Q

What is the electromagnetic wave equation starting with light (c)?

A

c=fλ

24
Q

What is the equation for efficency and what are the units?

A
  • Efficiency = Useful energy output/Total energy input
  • Efficiency = NO UNIT
  • Useful energy output = (J)
  • Total energy input = (J)
25
Q

What is the equation that inculdes Voltage, Energy and Charge?

A

V = E/Q

26
Q

What is the equation for power consumption that includes current and voltage?

A

P=IV

27
Q

What is the equation for energy that includes current, voltage and time?

A

E=IVt

28
Q

What is the equation for charge (Q)?

A

Q=It

29
Q

What is the equation for the critical angle?

A

Sinc = 1/n

Sinc = Critical angle

n = Refractive index

30
Q

What is the momentum equation?

A

P=mv

Momentum = mass*velocity

31
Q

What is the equation for the concervation of momentum?

A
  • (MV) + (MV) = (M2V2) + (M2V2)
  • Total momentum before collision or explosion = Total momentum after collision or explosion
32
Q

What is the impulse equation?

A
  • ΔP = mv - mu
  • Change in momentum = mass*final velocity - mass*Initial velocity
  • ΔP = Ft
  • Ft = mv - mu
  • Impulse is Ft (change in momentum)
  • F= ΔP/t
33
Q

What is the suvat equation?

A
  • v2 = u2 + 2as
  • Final Velocity2 = Initial velocity2 + 2acceleration * Distance
  • If time is a variable, use a = v-u/t
34
Q

Ideal gas equation for constant temperature?

A

P1V1 = P2V2

35
Q

What is the ideal gas equation for constant volume?

A
  • P1/T1= P2/T2
36
Q

What is the equation for Power Lost?

A
  • P = I2R
  • Power lost = Current2 * Resistance
37
Q

What is the equation for Turns to Voltage ratios?

A
  • Vi/Vo = Ni/No
  • Primary V/ Secondry V = Number of turns in primary coil/ Number of turns in secondry coil
38
Q

What is the equation which includes Force, Mass and Acceleration?

A
  • F = ma
39
Q

What is the equation for power in a transformer (power in and power out)?

A
  • Primary Power = Secondary Power
  • IVp = IVs
  • ONLY if 100% effeicient
40
Q

What is the Doppler equation to find the velocity of a galaxy?

A
41
Q

What is an Elastic collision?

A
  • A collision where KE is concerved
  • KE before = KE after
42
Q

What is an Inelastic collision?

A
  • Inelastic collision is KE is not concerved
  • KE before is greater than KE after

Physics GCSE (9 decks)

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