PHYS3207 Lecture 2
Chapter 2 What is inside cells
Size of different cells
Films On Demand - Inside Cells: Cells and Their Organelles
Good website: http:/www.johnkyrk.com/index.html
http:/multimedia.mcb.harvard.edu/
Molecules, virus, and bacteria
Molecules

PHYS3207 Assignment #6
1.
Due March 23
2.
3. A microscopic bead was attached to a network of cytoskeleton. At the room
temperature, random motion of the bead was recorded over time and found to
have a root-mean-square deviation from its equilibrium positi

PHYS 3207
Assignment #3
Due Feb 10th at class
1. Consider a 1D random walk:
kjL: displacement of step j, L is a constant.
kj is a random variable has the possibility distribution as this table
k value probability
+2
0.2
+1
0.4
-1
0.3
-2
0.1
xN : Position

Temperature reflects
kinetic energy of thermal motion
Decoding the ideal gas law
Gas molecules bounce at the wall
Momentum chance result in pressure on the
wall
p m vx2 N / V
pV=NkBT
p is the pressure
V is the volume of the container
N is number of tota

Statistical Physics
Chapter 3 The molecular
dance
Random can be ANY value
There is some prior knowledge on the
distribution.
We know precisely the probability
distribution of velocity of the molecules
We cant predict the velocity of each individual
mo

PHYS 3207 Assignment #2
Due Wednesday, Jan 27th.
1. An 8-sided dice shown in figure, has exactly equal probability giving
any number x between 1 to 8.
a. Find <x>, <x2> and the variance of x.
b. If you have two such dices being thrown together, and the tw

PHYS3207 Lecture 1
Chapter 1 What the ancients know
Chapter 1 What the ancients know
First Law of thermodynamics
Preliminary expectations about the
Second Law
Temperature and heat is a major factor in
biology
BioPhysics Lect 1
BioPhysics Lect 1
First l

PHYS 3207
Assignment #4
Due March 2nd at class
1. Some organic substance has a mass density of 1100kg/m3. It is then grounded into powder
with powder particles in sphere shape with R=0.1 m.
a) Find the scale height z* of such powder suspending in water (t

PHYS 3207
Assignment #5
Due March 16th at class
1. Heart: the maximum flow rate from the heart is 500 ml s1. If the aorta can be modeled as
a pipe with diameter of 2.5 cm and length of L. Assuming the flow is laminar, viscosity
of blood, = 2x103 Pa.s .
a)

PHYS 3207 Assignment #1
Due Wednesday, Jan 13th.
0. (No points) Self-study/review the cell anatomy and function, recommended website:
http:/www.johnkyrk.com/index.html
1. An Electric power generator produce 900 W continues maximum output and burn 2.3 litt