PA2720___Thermal_and_Statistical_Physics

Question 1

Mean free path equation

Answer 1

Question 2

Collision cross section equation

Answer 2

Question 3

V_rms

Answer 3

Question 4

Relaxation time

Answer 4

Question 5

A graph of current vs retarding potential
(For an experiment investigating work function of a metal)
(Label: Max Current, Stopping Potential, mathematical form of curve)

Answer 5

Question 6

Increasing Frequency effect
(On a graph of current vs retarding potential AND why)

Answer 6

Increasing “f”, increases energy and thus KE max of electrons emitted, requiring higher stopping voltage.

Question 7

Increasing Intensity effect
(On a graph of current vs retarding potential AND why)

Answer 7

Increasing the photoelectron current (since more electrons can escape, but KE max stays the same)

Question 8

Derivation:

Answer 8

Question 9

Combined Law

Answer 9

Question 10

Derivation for 1st Maxwell Equation

Answer 10

Question 11

Enthalpy definition

Answer 11

Is the sum of the internal energy of the system plus the product of the pressure and volume of the system.

Question 12

Derivation of dH = TdS + VdP

Answer 12

Question 13

Derivation of:
(Isobaric)

Answer 13

Question 14

Energy of the nth Electron

Answer 14

Question 15

Boltzmann energy distribution equation
(Name the symbols)

Answer 15