Problem 2.
Part A
Using the average sized biological atom, I can use the mass of carbon (C=12 Da) because the
problem states that the molecule is probably made up of more carbons than the other atoms
( 0=16 Da, N=14 Da, H=1 Da).
4
number of atoms=
4.2 x 1

Diffusion Describes Random Motion
Goals
The purpose of this lab was to observe random motion of silica beads in a fluid and
determine how different parameters affect random motion including size and fluid viscosity using
the microscope. In addition, the r

Physics 161 Name
Date
Addition of Vectors
I.
INTRODUCTION
A vector is a mathematical concept that represents a quantity that has both magnitude and direction. In
physics these quantities include displacement, velocity, acceleration, force, momentum among

Physics161
Activity #
Date _
Lab Partner(s) _
Projectile Motion
I.
INTRODUCTION
When an object is thrown near the surface of the earth, the object undergoes an accelerated motion. The
acceleration of the object is in a downward direction and is due to the

Physics 161 In class lab activity
Names
Date
The Inclined Plane- Friction and Energy
I.
INTRODUCTION
Work is done on a system when a force is applied through some distance on the system. The amount of
.
work is given by W = F d and is a scalar quantity. A

PH 161 Discussion
1&2-D Kinematics
Units 1 and 2
Bonnie and Clyde
In your new job, you are the technical advisor for the writers of a
gangster movie about Bonnie and Clyde. In one scene Bonnie and
Clyde try to flee from one state to another. If they get a

Physics 161 Activity Date
Partner(s)
Friction
I.
INTRODUCTION
Whenever two solid surfaces move against each other there is a force between the surfaces retarding
the motion. This force is called friction. Friction acts parallel to the surfaces and in the

Physics 161 Activity # 1 Date
Partner(s)_
Measurement
I.
INTRODUCTION
Common laboratory measurements involve the determination of fundamental properties such as mass,
length, and time. From these measurements physical relationships can be resolved. This l

Evelyn Solis
September 4, 2016
Homework 1
Problem 1
The detailed number of the food is telling us that a cougar should eat 1.3608 kg; therefore, I was
wondering how a person can measure the right amount to feed the cougar. The data needs to be
changed bec

Evelyn Solis
Mahsa Saremi
Cell Motion Lab Report
9/20/2016
Velocity of Bacteria and Cells Determine the Need of Antibiotics
The first goal was to examine the motion of E. coli bacteria. Excel was used to analyze
and record the position, velocity and accel

Evelyn Solis
Homework 2
Problem 1: Moving a vesicle
dx x
1. By using the speed equation ( speed = dt = t ), or by looking the slope of the graph, it is
possible to calculate at which the vesicle moves with the highest speed. Answers: A
dx x
2. In the same

Evelyn Solis
Homework 4
Problem 1: Viruses
1.
2.
density=
mass
volume ,
4 r3
=1.5053 X 1022 m3 =1.5053 X 1016 ml
3
v=
( 1.3mlg ) (1.5053 X 10
16
mass=
ml )=1.9569 X 1016 g=1.9569 X 1019 kg
W ( gravity force )=mg
W = ( 1.9569 X 1019 kg )
( 9.8s m )=1.9178

Evelyn Solis
Homework 3
Problem 1: The farmer and the donkey
The two free body diagrams show clearly that the two blocks exert the same force on the scale
when the two blocks are next to each other or when one block is placed above the other.
Knowing that

Evelyn Solis
Homework 2
Problem 1: Moving a vesicle
dx x
1. By using the speed equation ( speed = dt = t ), or by looking the slope of the graph, it is
possible to calculate at which the vesicle moves with the highest speed. Answers: A
dx x
2. In the same

Evelyn Solis
Homework 4
Problem 1: Viruses
1.
2.
density=
mass
volume ,
4 r3
=1.5053 X 1022 m3 =1.5053 X 1016 ml
3
v=
( 1.3mlg ) (1.5053 X 10
16
mass=
ml )=1.9569 X 1016 g=1.9569 X 1019 kg
W ( gravity force )=mg
W = ( 1.9569 X 1019 kg )
( 9.8s m )=1.9178

Homework 5
Problem 1:
Part A.
Fdrag =( 0.25 )
(
2
1.0 X 103 kg
2 0.002 m
(
0.0003
m
)
=2.82743 X 1010 N
3
s
m
)
(
F viscous=6 0.8 x 103 N
(
)
s
0.002 m
(0.0003 m)
=9.04779 X 109 N
2
s
m
(
)
)
R = Fdrag / Fviscous
10
R=
2.82743 X 10 N
=03124
9.04779 X 109

Welcome to Physics
161
General Physics I
Mechanics Lecture 1, Slide 1
Agenda for today
Your Instructors
Physics 161 is
What do you need in this course?
How do you succeed in this
course?
Lets get started
Six joint PHYS 161 sections
Akmal:
Lecture:PHY