3/7/16
Homework for Monday, April 4, 2016
If my question was What is your favorite hobby? I would begin the process of deciding
on an answer by first rereading and analyzing the question to clarify that I had the correct
understanding and wasnt missing an
PS 304
2/10/15
Homework for Wednesday, February 10th
Materials:
Rubber band
Magnets
Measuring stick
Mount (holding a pen in place would work fine)
Procedure:
1. Set the mount at one end of the measuring stick. To make measuring easiest, put it at 0
cm
3/7/16
Homework for Monday, March 7, 2016
First I would reread the question aloud, asking the teacher to clarify any phrasing I didnt
understand. This is very important because if I misread the question or missed a concept that
needed to be addressed, my
2/3/16
Short Answer Homework
1. All objects except the shiny washers stick to the bar magnet. The shiny washers did not
attract or repel any of the other objects.
2. Holding the bar magnet, dark washers, and silver cylinders over the compass causes its
po
PS 304
Short Answer Homework for Monday, February 8, 2016
Required Materials:
Container
Rubber band
Small magnets
Paper clips/pins
Post-it notes (small enough to fit in container)
Procedure:
1. Pull the rubber band around the container vertically so
February 1, 2016
Short Response Homework
The discussion could have been improved by having each group back their findings with
data. Rather than sharing generalizations each group should have specified a more exact amount
that the motor speed changed by w
Physical Science 303 Fall 2013
Unique # 58185 T Th 7pm-9pm RLM 8.322
Instructor M. Sohaib Alam, sohaib@utexas.edu
Oce Hours RLM 9.318, Fri 2-3pm
I will be available during oce hours. Feel free to email me with
questions.
Supervisor Dr. Gleeson, gleeson@ph
P S Final Exam Study Guide
In Class Assignment 1
y=x
y = x2
linear
parabola
y = x3
y=
tan
arc
In Class Assignment 2
T
a) L increased by a factor of 9
c) g increased by a factor of 4
b) L decreased by a factor of 4
d) g decreased by a factor of 6
e)
f) [X]
PS 303
In Class Assignment Handout 6
.
Problem 1: Newtons rst law of motion states that an object will continue
in its state of rest or motion in a constant direction (or in other words,
travel at a constant velocity) unless acted upon by an external agen
PS 303
In Class 16
.
Problem 1: Work done is dened as F d, in the presence of which
conservation of energy gets modied to
1
1
m|vf |2 + mghf
F d + m|vi |2 + mghi =
2
2
(a) Work out the units of Work done.
(b) A car of mass 65 kg is traveling at 100 km/hr.
PS 303
In Class 15
.
1
Problem 1: (a) Calculate the units of Kinetic Energy ( = 2 m|v |2 ).
(b) Calculate the units of Gravitational Potential Energy (= mgh).
(c) What is the kinetic energy of a jogger with mass 65.0 kg traveling
at a speed of 2.5 m/s.
(d
PS 303
In Class Assignment Handout 13
.
Problem 1: Given the denition of torque: = |r| |F | sin , and how it
relates to angular acceleration = I , work out the units for I , the
moment of inertia. In the preceding expressions, r is the vector that
perpend
PS 303
In Class Assignment Handout 11
.
Problem 1: Consider a projectile with initial speed |v | thrown at an angle
of w.r.t. (with respect to) the horizontal ground.
(a) Write down the initial vector vi in x- and y- component form.
(b) Write down the acc
PS 303
In Class Assignment Handout 9
.
Problem 1: Today we derive the kinematic equations, the basic equations
that govern the motion of (point) objects.
vf vi
, and rear(a) Start with the denition of acceleration, a =
t
range this equation so you have an
PS 303
In Class Assignment Handout 13
.
Problem 1: We have already discussed two units of specifying angles: degrees and revolutions. A third way to specify angles is the unit radian,
dened as the ratio of the arc length to the radius of the circle.
(a) W
PS 303
In Class Assignment Handout 12
.
Problem 1: An ice skater is rotating at an angular velocity of 3 revolutions
per second. He comes to a complete stop in 5 seconds. Calculate:
(a) The angular acceleration of the ice skater.
(b) The number of revolut
PS 303
In Class Assignment Handout 10
.
Problem 1: A car of mass m = 500 kg experiences a force of F = (750, 0)
N, and has initial velocity vi = (0, 15) km/hr.
(a) Convert km/hr to m/s and rewrite vi in m/s.
(b) Calculate vf (nal velocity) after a time pe
PS 303
In Class Assignment Handout 8
.
Problem 1: Given that the vector v has magnitude |v | = 2, write the
vector in the format v = (x, y ) given that the angle it makes with the
x-axis is:
(a) = 0 ;
(b) = 45 ;
(c) = 90 ;
(d) = 135 ;
(e) = 180 ;
(f) = 22
PS 303
In Class Assignment Handout 7
.
Problem 1: Use Pythagoras theorem to calculate the magnitude |v | (size)
of the following vectors:
(a) v = (3, 4);
(b) v = (5, 12);
(c) v = (8, 15);
(d) v = (7, 24);
(e) x = (1, 0) (the vector x is known as the unit
PS 303
In Class Assignment Handout 4
.
Problem 1: (a) Draw a set of 3 similar triangles as shown on the board.
(b) Measure and report the lengths b1 , b2 , b3 , p1 , p2 , p3 , h1 , h2 , h3 .
p1 p2 p3
(c) Calculate the ratios , , .
b1 b2 b3
p1 p2 p3
(d) Ca
PS 303
In Class Assignment 3
.
Problem 1: Consider two points A and B whose position vectors with respect to some origin, which we call O1 are given by xA = (2, 5) and
xB = (4, 2). Calculate:
(i) xA + xB ;
(ii) xA xB .
Problem 2: Consider another origin O
PS 303
HW 5
.
Problem 1: A car wheel is rotating at 5 revs/second. A braking force is
applied due to which the wheel comes to a complete stop in 10 seconds.
(a) Calculate the number of revolutions that the wheel makes before
coming to a complete stop.
Ans
PS 303
In Class Assignment 2
.
Problem 1: We have learned that the period of oscillation for a pendulum
L/g . By what factor
depends on the pendulums length as T
would T change if:
(a) L increased by a factor of 9;
(b) L decreased by a factor of 4;
(c) g
PS 303
In Class Assignment
Week of 2 Sept, 13
Problem 1: Draw a graph of Y vs. X for:
(a) Y = 3X with X ranging from 5 to 5.
(b) Y = X 2 with X ranging from 3 to 3.
3
(c) Y = X with X ranging from 3 to 3.
2
(d) Y = 2 X with X ranging from 0 to 25 (notice
PS 303
Review
.
Units, Proportionality Proportionality relations like Y X or something more complicated like Z X 3 Y 2 are equivalent to the equation
Y = kX or Z = kX 3 Y 2 for some proportionality constant k . Each of
X , Y and Z could have units (such a
PS 303
HW 5
.
Problem 1: A car wheel is rotating at 5 revs/second. A braking force is
applied due to which the wheel comes to a complete stop in 10 seconds.
(a) Calculate the number of revolutions that the wheel makes before
coming to a complete stop.
(b)
PS 303
Homework 1
.
Problem 1: Suppose X , Y and Z each represent some physical variable,
X2
and that Y . How does Y change (i.e. Y (?)Y ) as
Z
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
X 2X (but Z remains the same);
X 4X (but Z remains the same);
X
X 2 (bu
PS 303
HW 3
.
Problem 1: An airplane (starting from rest) accelerates down a runway at
4.2 m/s2 for 50 s until it nally lifs o the ground. Determine the
distance travelled before takeo.
Problem 2: A car starts from rest and accelerates uniformly over a ti
PS 303
Homework
.
Problem 1: A cannonball is red horizontally at a speed of 10 m/s on top
of a cli 180 m high.
(a) Calculate the time it takes for the cannonball to hit the ground.
(b) Calculate the total horizontal distance it has covered during this
tim