Physics 262/266  exam#1
Equations Table:
N A 6.02 1023 mol 1 R 8.314 J mol K k 1.38 10
23 8
PV nRT
J K

L L0 T V V0 T
PV NkT

T ( K ) T ( C ) 273.15 1 cal 4.186 J P P0 gh
5.67 10 W m 2 / K 4
Q mcT Q mL dW PdV ;W PdV
i f
U Q W

dU dQ dW Vf W nRT ln( )
Physics 262  exam#l
1. (25pts) Answer the following questions. Justify your answers. (Use the
space provided below and on the next page)
a). Heat transfer between objects is through conduction, convection, and/0r radiation.
Identify the predominant form
Physics 262  exam#l
1. (25pts) Answer the following questions. Justify your answers. (Use the
space provided below and the next page)
3.). Which of the following objects (arrows) will produce real images? Which images
willbe inverted?
9A0. ii) 4.) g 4.)}
Van der Waals
in an automobile engine, a mixture of air gasoline is being compressed
before ignition
typical compression ration from 1 to 9
initial P=1 atm and T= 27 degrees C
find the temp of the compressed gas if we are given the pressure after
comp
Specific heat examples
physical intuition for C:
for a given amount of heat flow W, specific heat c is a measure of the
thermal sensitivity of the material
iron vs. wood plate
metal plate
m=0.25 kg
c iron= 470 J/kg K
hot food
Q= 2kj
delta T=Q/mc
Physics 262 Syllabus
Please read the assigned sections of the book before each lecture
*
Jan. 19 M
Martin Luther King Day
1
Jan. 20 Tu
Ch. 17:17.117.4
2
Jan. 22 Th
Ch. 17:17.517.7
3
Jan. 27 Tu
Ch. 18:18.118.4
*
Jan. 27 Tu (EOB)
Last day to add
4
Jan. 2
Thermal properties of matter
equations of state
ideal gas equation
PV DIagrams
KineticMolecular Model of an Ideal Gas
heat capacities
distribution of Molecular speeds
phases or matter
Equations of State
state variables
physical variables describ
Kinetic Theory assumptions
a large # N of identical molecules each with mass m in a container with
volume V
molecules behaves as point particles
molecule sizes <avg separate bet particles and dim of container
molecules moves according to Newtons laws
Distribution
temperature is a direct measure of the average translational KE of the
molecules in an ideal gas
Distribution of a molecular speeds
within an ideal gas
molecules moves with a diversity of speeds
a mathematical rigorous way to describe thi
Calorimetry: problem solving with heat exchanges
main concept conservation of energy
sum of all heat flows into and out of systems =0
sign convection heat enters and object is +, heat leaves and objects delta T= TfTi
steps:
identify all phase change
Equation Table:
me 9.111031 kg
c 3.00 10 m s
8
k 1.38 10
23
h 6.626 10
h
2
J K
34
J s
1eV 1.602 1019 J

1
1
v2
c2
1MeV c 2 1.780 1030 kg

hc 1240eV nm
a0 0.0529nm
R 1.0973732 107 m 1
x ' ( x ut )
L0
L
t t0
x ' (x u t )
y' y

x ( x ' ut ' )
y y'
y ' y

Thermodynamics
heat
transfer of energy between objects with different T
thermal contact
two objects are in thermal contact if heat can transfer between
them
not necessary in physical contact
thermal equilibrium
the situation in which two objects in
Equations Table:
c f v f n n c v n

1' 1 n1 sin 1 n2 sin 2
sin c n2 n1 , n1 n2
M

y' s' y s 1 1 2 1 s s' R f
sign conventions if obj is on the side of the incoming light s otherwise if img is on the side of the outgoing light s' otherwise if object or i
Equation Table:
me 9.111031 kg 1eV 1.602 1019 J
c 3.00 10 m s
8
k 138 10 .
23
J K J s
h 6.626 10 h 2
34

1 1 v2 c2

1MeV / c 2 1.780 1030 kg hc 1240 eV nm a0 0.0529nm R 1.0973732 107 m 1
x ' ( x ut )
x ( x ' ut ' )
x ' (x u t )
L
L0

y' y z' z u t' t
Physics 262/266  exam#1
1.
(30 pts) Answer the following questions. (Use the space provided below and on the next page if needed.)
a). (6 pts) An ideal gas is being taken from an initial state i to a final state f through three different thermodynamic pr
Physics 262  exam#2
1. (25pts) Answer the following questions. Justify your answers. (Use the space provided below and the next page)
a). (9pts) An object (an arrow) is placed as shown in front of each of the following optical instruments. Describe the i
1.
a.) The restimas energy Ea and the total relative energy E of three particles are expressed in terms of a side amount A: particle #(E 0(1)=A, E (1)=2A), Particle#2(E0(2)=3A, E (2)=4A), Paricle #3=2A, E (3)=3A. Rank the particles according to i)Kinetic
Physics 262/266  exam#1
1.
(25 pts) Answer the following questions. (Use the space provided below
and the next page if needed.)
a). (9pts) Systems A and B are in thermal equilibrium with each other. i) Do they
necessarily have the same internal energy? i
Physics 262  exam#2
1. (25pts) Answer the following questions. Justify your answers. (Use the
space provided below and the next page)
a). (9pts) An object (an arrow) is placed as shown in front of each of the following
optical instruments. Describe the i
Measuring Temperature/Thermometer
a small amount of liquid will typically increase in volume as temperatures
rise
mercury chosen early on bc its dense
small volume can record large temp range
pressure of fix vol of gas will rise if temp rises
differe
Quantity of Heat
energy transfer due to temp iff is called heat
historically, the unit of heat is defined in terms of temp changes of water
1 calorie = amount of energy transfer heat needed to raise the temp of 1g of
waters from 14.5 degrees celsius to
Temperature & Heat
thermometers and temperature scales
absolute zero and the Kelvin scale
meaning of thermal equilibrium
thermal expansion
meaning of heat
calorimetry calculations
mechanisms of heat transfer
Description of Physical Systems
microsco