Thermal stress is:
A. Overheating of the brain due to learning too much about
thermodynamics.
B. Force resulting from shrinking or expanding of the
material due to temperature change.
C. Force per uni
Temperature in the room.
Are all of the objects in this room at
(roughly) the same temperature?
A. yes
B. no
C. what do you mean by that?
Phys153 Lecture 2
1
Activity 1a: Touch different
materials
To
Monday/Tuesday
Monday/Tuesday
tomic ideal gas undergoes a cyclic process a ! b !
05 P a. Va = 2 10 5 m3 and Vb = Vc = 6 10 5 m3
the path b ! c.
P
c
a
b
V
Thursday/Friday
Name:
1. A mass of 2.0kg is at
PHYS153
Full written solutions for Stirling and Diesel efficiency calculations
Derivation of Stirling cycle efficiency (Activity from class) ~ Page 2
Derivation of Diesel cycle efficiency
- via calcul
Activity 9: Temperature of the Sun
Estimate the temperature of
the Sun using only the
information from this graph
and the data below.
The graph is of a
spectrum of the sun
through the
atmosphere
Radi
These slides are to supplement the
reading on damped mo2on.
When reading the material on
damped SHM you will nd some
extra terminology and details here.
Assuming Smal
Activity 13. A gas is heated and cooled in different
ways. Find the work for each of process:
1 to 2, 2 to 3, 3 to 4, and 1 to 3.
Pressure
3P0
P0
1
P0 = 200 kPa
2
V0 = 2 m3
3
4
Vhys153 - Le
Activity 16 - Experiment
Activity 16: We put a resistor inside our constant volume
gas thermometer, applied 10V to it and noticed that
current was 1 A. We collected the data showing a
dependence of te
\l) ail. % Ls lo om mm shock- Qhemw .0va Mo
WW on H-
Jde huLm<320
1380, a 1% K: @_3_ 3 50063.6}
im% 10?! - .1
mokhvx
" 2" w 4F- : mend
* 2'53 «:17ng ° 15
.\o\'7 M q 2
AA: 0 L \ @130) " 2m "L
S
Number of moles is PV/(RT) = .402
U = nCVT = 836 J
Number of moles is PV/(RT) = .402
U = nCT = 836J
Note: change in internal energy only depends on temperature for an ideal gas
and also only depends o
Tutorial Week 8 Answer Guide
This weeks tutorials are different.
1) They are to help the students prepare for midterm one by giving them 2 midterm
questions from past exams.
2) Because of this, the ru
Laser Cu)er
Group Problem
A laser cu)er generates a series of high intensity
pulses rather than a con6nuous beam of light. Each
pulse is about 0.500 J of energy and h
Tutorial Week 8 Answer Guide
This weeks tutorials are different.
1) They are to help the students prepare for midterm one by giving them 2 midterm
questions from past exams.
2) Because of this, the ru
A 50 g mass attached to a spring moves on a horizontal,
frictionless surface in SHM. Its period is 4 s. At t=0, the mass is
released from rest with an amplitude of +A.
Find the displacement at t=1 s ?
Activity 22A: Cork in water
You are given 2 cups with water, a wine cork, 5 steel nails. There is a
ruler printed at the bottom of this activity sheet. Start with pushing 3
nails into one end of the
Activity 4: P(T) data analysis
On worksheet:
For the data given,
draw a best fit line,
and calculate the
slope and intercept.
What is the intercept?
What does this
mean?
How would the
calibration c
Discussion Question
Before you start writing anything think about what is
being asked.
We will help you break it up into smaller parts.
1
Discussion Question
Helium gas (Cv=12.5 J/(mol K) has initial
Tutorials Week of Feb 3
2014
Circuits
ohm
d
watt QuesCon 1 To be done individually: (10 minutes)
these
In the circuit shown, both resistors have the same value
R. Suppos
Monday/Tuesday
Tutorial
Midterm Review
Part a) is worth 5 points Part b) is worth 5 po
Thursday
Tutorial
Midterm Review
"1
q-
*'.^-\
-aayur<fuc+
r 4-vllr*qcl fran .,'q cut<
AL;'4LLAL =
J
Week of Jan 27 slides
1
Group Problem
Each of the two 25-F capacitors shown is initially
uncharged. How many coulombs of charge pass
through the ammeter A after the switch S is
capacitors s
Group Problem (Heat Transfer)
A copper-bottomed saucepan with thermal conductivity of 401 W/(m K) containing 0.8L of boiling
water, boils dry in 10 min. Assuming that all heat flows through the flat
ThursdayTutorial week Nov 21
A certain car consists ofa 1000 kg body resting on ts suspension. The
80 kg driver drops a 200 kg load into the car dnd observes that the car body
performs damped harmonic
Warm up Clickers
Week of September 16, 2013
1
Celsius or Kelvin?
An auditorium has dimensions 10 m x 10 m x 60 m.
How many moles of air are in this room if the pressure
is 1 atm and the temperature i
Demos
Mass on a spring with cardboard
Metal bar close to a magnet with motion detector
Damped oscillations
Up to now we only
considered the restoring
forces in SHM. But we
know that in second
Newton
Tutorials Work Sheet 4
Name
Activity ID
Problem
A 100 gram sample of an unknown substance is cooled at a constant rate. The starting
temperature of the sample is 140 C. The temperature data as a funct
Demos
Mass on a spring with cardboard
Metal bar close to a magnet with motion detector
Damped oscillations
Up to now we only considered
the restoring forces in SHM.
But we know that in second
Newton
2. A person makes a quantity of iced tea by mixing 500g of hot tea (essentially water)
Physics 153 Term 2 UBCice at its melting point. Janthe initial hot tea is a temperature of
with an equal mass of
Q2: What is the efficiency of this cycle?
A. 33.3%
B. 50%
C. 66.7%
D. 100%
E. Not enough information given.
1
Q3: Is this cycle more or less efficient than a Carnot
engine with a hot reservoir at 1200