5.1 - Newtonian world - Thermal Physics

Question 1

How to convert Celsius to kelvin

Answer 1

Degrees C = K - 273.15

Question 2

O celcius in kelvin

Answer 2

273.15 K

Question 3

100 celsius in kelvin

Answer 3

373.15 K

Question 4

What is thermal equilibrium ?

Answer 4

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

Question 5

What is absolute 0

Answer 5

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.

Question 6

What is the specific heat capacity equation ?

Answer 6

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

Question 7

What is SHC

Answer 7

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

Question 8

What is the unit of SHC

Answer 8

Jkg^-1K^-1

Question 9

What is the specific latent heat equation ?

Answer 9

Energy = mass x specific latent heat

Question 10

What is the unit for specific latent heat

Answer 10

Jkg^-1

Question 11

What is specific latent heat of fusion ? (Lf)

Answer 11

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

Question 12

What is specific latent heat of vaporisation ? (Lv)

Answer 12

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

Question 13

What is Avogadros constant ?

Answer 13

Na = 6.02 x 10 ^ 23

Question 14

Number of particles equation ?

Answer 14

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

Question 15

Number of moles equation ?

Answer 15

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

Question 16

What is an ideal gas

Answer 16

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

Question 17

What is the equation for force (pressure)

Answer 17

F = m x v / t

Question 18

What is Boyle’s law

Answer 18

Pressure is inversely proportional to volume, providing temp is constant

Question 19

What is Boyle’s law equation

Answer 19

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

PV/T = k
(PV = constant)

Question 20

What is the root mean square speed equation ?

Answer 20

PV = 1/3 x N x m x rms

Question 21

Pressure equation with rms

Answer 21

P = Nmv^2 / 3V

Question 22

What is the maxwell boltzmann constant ?

Answer 22

1.37x10^23

Question 23

What does the maxwell boltzmann curve represent

Answer 23

The total number of particles

Question 24

What does the MB curve show

Answer 24

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