/(e
Name:     +y     

Quiz 3 16 February 2009
•
Recitation Day/Time
_
1. Find the change in entropy when 3.0kg block of copper is slowly cooled from 350.0oC to
50.0 oC. (C cu = 386Jlkg.K)
(4 point)
()
I'l7C t1 T
=
I
LJ S
=
fd f {
_tf
:=
T
Quiz
x 13 February 2009
Name:
key
_ _ _ _.L.
_
RecitatienDaytTimf"ce          
1. A quantity of gas within a closed container undergoes the cycle shown below. Calculate the net
(3 points)
heat added to the gas during one complete
Name:     . . , <      
Quiz 2 09 February 2009
Recitation DaylTime
_
1.
a) A quantity of 1.50 moles of ideal diatomic gas (C y = 5RJ2) is expanded isothermally to
three times its initial volume at +25.0oc. Find Q, Wand AB for this process.
PHY 241 University Physics 111
Lecture 9
Banu Ozkan
Feb 02, 2014
Molar Specific Heat CV at Constant Volume
Consider n moles of an ideal gas at pressure p and
temperature T . The gas volume is fixed at V .
These parameters define the initial state of the
PHY 241 University Physics 111
Lecture 15
Banu Ozkan
February 23, 2015
1
34.2 Two Types of Images
real image
object
lens
object
mirror
virtual image
Image: A reproduction derived from light.
Real Image: Light rays actually pass through image, really exis
PHY 241 University Physics III
Lecture 16
Banu Ozkan
February 25 , 2015
34.6 Spherical Refracting Surfaces
Fig. 3411
Spherical Refracting Surface:
n1 n2 n2 n1
+ =
p i
r
When object faces a convex refracting surface r is positive. When it faces a concave
Rotational Motion
Introduction
In this lab a constant torque will create a constant angular acceleration for a rigid body rotating
about its center of mass. You will see that the moment of inertia depends on the rotation axis for
a given object and finall
PHY 241 University Physics 111
Lecture 7
Banu Ozkan
January 28, 2015
Review Chapter 18
Put 50g ice at 15oC (ci = 0.55 cal/gK) into
larger reservoir of water at 0oC (Lf=79.7
cal/g. What happens?
Highest E
1 or 4 or same
Highest W
1 or 4 or same
Hig
PHY 241 University Physics 111
Lecture 8
Banu Ozkan
January 30, 2014
Chapter 19 Summary so far
2
nMvrms
p=
3V
vrms =
3RT
M
At a given temperature T all ideal gas molecules, no matter what their mass,
have the same average translational kinetic energy.
K
PHY 241 University Physics 111
Lecture 5
Banu Ozkan
January 23, 2014
18.9 A closer look at Heat and
Work
The pressure of the gas is equal to the weight of
lead shot placed on top of the piston of area A.
Work W is done by or on the gas by removing or
a
PHY 241 University Physics 111
Lecture 14
Banu Ozkan
February 20, 2015
1
Mathematical Description of Traveling EM Waves
Electric Field:
Magnetic Field:
E = Em sin (kx t )
B = Bm sin (kx t )
Wave Speed:
c=
1
0 0
All EM waves travel a c in vacuum
2
Wavenum
PHY 241 University Physics 111
Lecture 12
Banu Ozkan
Feb 10, 2014
ENTROPY
Entropy is a state function, does not depend on path
f
S = S f Si =
i
dQ
T
Entropy depends on Q, since T is in K and never
negative.
If Q<O then S<0
If If Q>O then S>0
Unit o
PHY 241 University Physics 111
Lecture 13
Banu Ozkan
Feb 11, 2015
Upcoming tests and
homework assignments
Feb 13 Quiz 4 (on chapter 20)
Feb 16 (review)
Feb 18 (Test)
No homework next week! Return this
weeks and next weeks on chaps 3334
on Feb 23
Path
Co
PHY 241 University Physics 111
Lecture 2
Banu Ozkan
January 14, 2014
Temperature scales, thermometers,
thermal expansion
If T gives the same reading then A and
B are at the same temperature
Thermal equilibrium
no net transfer of thermal energy
" Conve
Collisions in Two Dimensions
Introduction and Theory
This experiment will build from the collisions in onedimension activity that has already
been done. In two dimensions, as in one, the total linear momentum of the system of
colliding bodies will be con
Damped Oscillations
Introduction
In an earlier lab you looked at a mass and linear spring system as an oscillator, which
produced simple harmonic motion (SHM). A pendulum is also an oscillator, where the
motion takes place along a curved path. In this lab
PHY241 Solutions HW 6
Chapter 34
5. We apply the law of refraction, assuming all angles are in radians:
sin
n
= w ,
sin nair
which in our case reduces to ' /nw (since both and '
small, and nair 1). We refer to our figure on the right.
are
The object O is
PHY 241 Solutions HW 5
Chapter 33
6. The emitted wavelength is
=
c
= 2 c LC = 2 ( 2.998 108 m/s )
f
( 0.25310
6
H ) ( 25.0 1012 F ) = 4.74 m.
9. If P is the power and t is the time interval of one pulse, then the energy in a pulse is
c
h
c
h
E = Pt = 100
PHY 241 University Physics 111
Lecture 3
Banu Ozkan
January 16, 2014
18.5 Temperature Scales
Define Celsius (or Centigrade) scale so that the size is the same as
for the Kelvin scale
ie 1K 1C0
ie T of 100K T of 100 C0
Thus,
The Fahrenheit scale used in
PHY 241 University Physics 111
Thermodynamics, Optics and
Modern Physics
Introductory Lecture
Banu Ozkan
January 13, 2013
Course Information
Office hours: Monday 11:00 a.m.12:00 pm
Friday 12:00 p.m. 1:00 p.m.
Or by appointment
Text Book:
Halliday/Re
PHY 241 University Physics 111
Lecture 4
Banu Ozkan
January 21, 2014
18.8 The Absorption of Heat by
Solids and Liquids
What happens when something is heated?
Its temperature will increase (how much?)
Its state (solid, liquid) will change (to liquid or
PHY 241 University Physics 111
Lecture 11
Banu Ozkan
Feb 06, 2015
Upcoming tests
Feb 09 Quiz 3 (chapter 19)
Feb 13 Quiz 4 (on chapter 20)
Feb 16 (review)
Feb 18 (Test)
ENTROPY
Entropy is a state function, does not depend on path
f
S = S f Si =
i
dQ
T