Whatson 27-31 Mock Paper II Test .:. Go Up

Do all of section A, and 2 out of 3 in section B

Key:

27:18a - Chapter 27, problem 18, part a

27-3 - conceptual question regarding material in section 27-3 in your book

PQ27#4 - PreQuiz 27, problem 4

Section A  Photoelectric graph

(a)  Explain how the apparatus works (read section 27-3)

(b)  Make a graph of photoelectric data with uncertainties (Like graph lab)

(c)  Calculate the best guess, min and max gradients (slopes) (Like graph lab)

(d)  Calculate Plancks constant from slopes (Like graph lab)

(e)  Unrelated photoelectric effect problem (like Problem 27:18a   0.70 eV and like PQ27#3)

(f)  What are the different predictions made by photon and wave theories regarding the photoelectric effect. (read section 27-3)

Section B  B1, B2, B3 do 2 out of 3:

Question B1  Closest approach, photon energy and momentum

(a)  Distance of closest approach. (Like Example 1 from the Rutherford and Bohr noteguide, like PQ27#4)

(b)  Conceptual question about the effect of the atomic number of the bombarded nucleus.

(c)  Photon energy from wavelength (like problem 27:12   1.77  eV, 3.10 eV, Like PQ27#2)

(d)  Photon momentum using de Broglie equation (Like PQ27#5 but easier)

(e)  Net force exerted on surface by photons (Like problem 27:72  5.3x1018 photons/sec - this is solved on the Wiki here)

(f)  Conceptual question about momentum (reflection versus absorption)

(b)  Balance a complete beta decay reaction including neutrinos vs anti neutrinos (top of page 927) (read section 30-5)

(c)  Draw a graph of the decay based on the half life (like the graph in the Decay rates noteguide)

(d)  Calculate the decay constant from the half life (like problem 30:37 in reverse)

(e)  What is the activity after a certain amount of time?  (like problem 30:44c  5.7x1013 decays/sec and Like PQ30#5)

(f)  Time to reach a certain activity. (like problem 30:44d  25.5 min and Like PQ30#5)

Question B3  Nuclear reactions

(a)  Balance a nuclear fission reaction (read section 31-2, Like PQ30#2)

(b)  Calculate the energy released by the reaction (like problem 31:17 (solved on the Wiki here) , Like PQ30#4)

(c)  Calculate the mass of fuel needed to create a certain power for a year. (like problem 31:20  0.116 g - This is solved on the Wiki here)