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Physics A level > 5.1 - Newtonian world - Thermal Physics > Flashcards

5.1 - Newtonian world - Thermal Physics Flashcards

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1
Q

How to convert Celsius to kelvin

A

Degrees C = K - 273.15

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2
Q

O celcius in kelvin

A

273.15 K

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3
Q

100 celsius in kelvin

A

373.15 K

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4
Q

What is thermal equilibrium ?

A

Thermal equilibrium is when 2 objects which have no net transfer of thermal energy between them

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5
Q

What is absolute 0

A

It is 0K when all molecules in a substance stop moving completely. The internal energy is due to electrostatic potential energy, as the molecules do not have any kinetic energy.

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6
Q

What is the specific heat capacity equation ?

A

E = m x c x change in temp (kelvin)

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7
Q

What is SHC

A

The enrgy required per unit mass to increase the temperature by 1K

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8
Q

What is the unit of SHC

A

Jkg^-1K^-1

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9
Q

What is the specific latent heat equation ?

A

Energy = mass x specific latent heat

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10
Q

What is the unit for specific latent heat

A

Jkg^-1

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11
Q

What is specific latent heat of fusion ? (Lf)

A

The energy required per unit mass to change a substance of solid to liquid

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12
Q

What is specific latent heat of vaporisation ? (Lv)

A

The energy required per unit mass to change a liquid to a gas

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13
Q

What is Avogadros constant ?

A

Na = 6.02 x 10 ^ 23

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14
Q

Number of particles equation ?

A

Number of particles = number of moles x Avagadros constant
N = n xNA

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15
Q

Number of moles equation ?

A

number of moles = mass of substance / molar mass
n = m/M

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16
Q

What is an ideal gas

A

Gas which contains large number of atoms which move with rapid random movement

17
Q

What is the equation for force (pressure)

A

F = m x v / t

18
Q

What is Boyle’s law

A

Pressure is inversely proportional to volume, providing temp is constant

19
Q

What is Boyle’s law equation

A

pV = nRt
Pressure x volume = n of moles x molar gas constant x temp of gas

PV/T = k
(PV = constant)

20
Q

What is the root mean square speed equation ?

A

PV = 1/3 x N x m x rms

21
Q

Pressure equation with rms

A

P = Nmv^2 / 3V

22
Q

What is the maxwell boltzmann constant ?

A

1.37x10^23

23
Q

What does the maxwell boltzmann curve represent

A

The total number of particles

24
Q

What does the MB curve show

A

If temp of gas is increased average particle speed and maximum particle speed both increase curve becomes lower and spread out

Physics A level (18 decks)

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