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GCSE Physics > Physics required equations > Flashcards

Physics required equations Flashcards

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1
Q

Unit 1

What is the equation for Kinetic energy?

A

1/2 x mass x speed^2

Ek = 1/2mv^2

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2
Q

Unit 1

What is the equation for gravitational potential energy?

A

mass x gravitational field strength x height

Ep = mgh

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3
Q

Unit 1

What are the equations for Power?

A
  1. Work done/time taken
  2. energy transferred/time taken

P = W/t = E/t

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4
Q

Unit 1

What are the equations for effeciency?

A
  1. effeciency = useful energy output/total energy input
  2. effeciency = useful power output/total power input

No symbol equation

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5
Q

Unit 1

What is the equation for elastic potential energy?

A

1/2 x spring constant x (extension)^2

Ee = 1/2ke^2

Given in exam

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6
Q

Unit 1

What is the equation for change in thermal energy?

A

change in thermal energy = mass x specific heat capacity x temperature change

ΔE = mcΔθ

Given in exam

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7
Q

Unit 2

What is the equation for charge?

A

charge = current x time

Q = It

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8
Q

Unit 2

What is the equation for potential difference

A

Potential difference = current x resistance

V = IR

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9
Q

Unit 2

What are the equations for power

A
  1. power = current x potential difference
  2. power = (current)^2 x resistance

P = IV = (I^2) R

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10
Q

Unit 2

What are the equations for energy transferred?

A

1.energy transferred = power x time
2.energy transferred = charge x potential difference

E = Pt = QV

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11
Q

Unit 3

What is the equation for density?

A

density = mass/volume

𝜌 =𝑚/𝑉

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12
Q

UNIT 3

What is the equation for thermal energy required for a change in state?

A

thermal energy for a change in state = mass x specific latent heat

E = mL

Given in exam

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13
Q

UNIT 3

What is the equation for finding pressure (gas)

A

pressure x volume = constant

pV = constant

Given in exam

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14
Q

UNIT 6

What is the equation for wave speed?

A

wave speed = frequency x wavelength

v= f𝜆

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15
Q

UNIT 6

What is the equation for time period?

A

Time period = 1/frequency

T = 1/f

Given in exam

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16
Q

UNIT 5

What is the equation for weight?

A

Weight = mass x gravitational field strength

W = mg

17
Q

UNIT 5

What is the equation for work done

A

work done = force x distance(moved in direction of force)

W = Fs

18
Q

UNIT 5

What is the equation for force

A

force = spring constant x extension

F = ke

19
Q

UNIT 5

What is the equation for the moment of a force?

A

moment of force = force x distance (perpendicular to the direction of the force)

M = Fd

20
Q

UNIT 5

What is the equation for pressure?

A

pressure = force perpendicular to surface/area of surface

p = F/A

21
Q

UNIT 5

What is the equation for distance?

A

distance = speed x time

s = vt

22
Q

UNIT 5

What is the equation for acceleration?

A

1.acceleration = change in velocity/time taken

𝑎 =Δ𝑣/𝑡

23
Q

UNIT 5

what is the equation for resultant force ?

A

resultant force = mass x acceleration

F = ma

24
Q

UNIT 5

What is the equation for momentum?

A

momentum = mass x velocity

p = mv

25
Q

UNIT 5

What is the equation for liquid pressure?

A

pressure = height of column x density of liquid x gravitational field strength

p = hpg

Given in exam

26
Q

UNIT 5

True or false: (final velocity)^2 - (initial velocity)^2 = 2 x acceleration x distance

I dont know what this is

A

TRUE!!

v^2 - u^2 = 2as

Given in exam btw

27
Q

UNIT 5

What is the equation for force

given in exam

A

Force = changte in momentum/time taken

F = mΔv/t

given in exam

28
Q

UNIT 7

What is the equation for force

UNIT 7!

A

Force = magnetic flux density x current x length of conductor in magnetic field

F = BIl

Given in exam

29
Q

UNIT 7

T or F: potential difference across primary coil/potential difference across secondary coil = number of turns in primary coil/number of turns in secondary coil.

Vp/Vs = Np/Ns

A

TRUE

Vp/Vs = Np/Ns

Given in exam

GCSE Physics (9 decks)

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