Solutions
PHSCS 313R: The Physics of Life
Homework 04: Solutions
A1. Use some program like Mathematica, Maple, or Matlab to make a plot like Fig. 4.3(c) in your text.
Repeat your plot several times. (You have 36 coins, so use 36 bins in your histogram.)
Chapter 10: Enzymes and Kinesin
PHSCS 313R: The Physics of Life
Homework 19:
Do problem 10.6 in the text
Do problem C.10.10 in the text. If you dont have an edition with this problem, here it is:
1
Chapter 10: Enzymes and Kinesin
PHSCS 313R: The Physics o
Chapters 8/10: Self assembly/Machines
Homework 16:
Do problem 8.5 in the text
Do problem 8.7 in the text
1
PHSCS 313R: The Physics of Life
Chapters 8/10: Self assembly/Machines
Do problem 10.2 in the text
2
PHSCS 313R: The Physics of Life
Chapter 8: Chemical forces and self assembly
Homework 15:
Do problem 8.1 in the text
Do problem 8.2 in the text
1
PHSCS 313R: The Physics of Life
Chapter 8: Chemical forces and self assembly
Do problem 8.3 in the text
Do problem 8.4 in the text
2
PHSCS 31
Chapter 7: Osmosis, Water Structure
Homework 14:
Do problem 7.3 in the text
Do problem 7.4 in the text
1
PHSCS 313R: The Physics of Life
Chapter 7: Osmosis, Water Structure
Do problem 7.6 in the text
2
PHSCS 313R: The Physics of Life
Chapter 7: Osmosis
Homework 13:
Do problem 7.1 in the text
Do problem 7.2 in the text
1
PHSCS 313R: The Physics of Life
Chapter 7: Osmosis
Do problem 7.5 in the text
2
PHSCS 313R: The Physics of Life
Chapter 6: Microscopic systems
Homework 12:
Do problem 6.5 in the text
Do problem 6.6 in the text
1
PHSCS 313R: The Physics of Life
Chapter 6: Microscopic systems
PHSCS 313R: The Physics of Life
A.1 Make up two problems that you think would be good test q
Chapter 6: Open systems
PHSCS 313R: The Physics of Life
Homework 11:
Do problem 6.4 in the text
Do problem 6.3 in the text again. Discuss your answer in the context of the idea of this section.
1
Chapter 6: Entropy and Temperature
PHSCS 313R: The Physics of Life
Homework 10:
Do problem 6.2 in the text
A.1 Isolated Einstein solids List all of the possible microstates of an Einstein solid with the specied number
of oscillators, N , and a given amoun
Chapter 6: Entropy PHSCS 313R: The Physics of Life
Homework 09:
Do problem 6.3 in the text
A.1 Compute the Shannon Entropy for the following strings. The relative probabilities of A, B, and C are 1/6,
1/3, and 1/2. (Doing this by hand shouldnt be too hard
Chapter 5: Reynolds Numbers
Homework 07:
Do problem 4.7 in the text
Do problem 5.1 in the text
1
PHSCS 313R: The Physics of Life
Chapter 5: Reynolds Numbers
Do problem 5.3 in the text
2
PHSCS 313R: The Physics of Life
Chapter 4.6: Biological diusion
PHSCS 313R: The Physics of Life
Homework 06:
A1. Nernst-Planck Behavior
Write a random walker simulation (you can use one of the previous solutions as a starting point) that includes
the eects of electric force assuming tha
Chapter 4: Diusion PHSCS 313R: The Physics of Life
Homework 05:
A1. Exact solution to the diusion equation
Eq. 4.20 in the book is the diusion equation for a one-dimensional universe (or a case in our universe where the
other two dimensions are restricted
Chapter 4: Random Walks
PHSCS 313R: The Physics of Life
Homework 04:
A1. Use some program like Mathematica, Maple, or Matlab to make a plot like Fig. 4.3(c) in your text.
Repeat your plot several times. (You have 36 coins, so use 36 bins in your histogram
Chapter 3: Probabilistic facts of life
PHSCS 313R: The Physics of Life
Homework 02:
Do Your Turn 3A (pg. 72) Instead of using Eq. 3.6, use Eq. 3.8. Hand in your plot attached to this page and
hand in your code used to generate the plot.
Do Your Turn 3D (p
Solutions
PHSCS 313R: The Physics of Life
Homework 03: Solutions
Problem 3.2
The density or concentration of molecules at a given height will be propotional to their probability.
CO2 = AeE/kT = AemO2 gh/kT
CN2 = BeE/kT = BemN2 gh/kT
We dont know A or B at
Solutions
PHSCS 313R: The Physics of Life
Homework 02: Solutions
Your Turn 3A (pg. 72) Instead of using Eq. 3.6, use Eq. 3.8. Hand in your plot attached to this page and hand
in your code used to generate the plot.
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