PHY 1020 Test 3
An indication that light is a wave is
A. that it has dark bands in the diffraction pattern
B. that it passes through glass
C. that it reflects off surfaces
D. its high speed
A. that it has dark bands in the diffraction pattern
The colors o
PHY 1020 Test 2
Recent reports discussing the population bomb
A. verify that the population will expand above 20 billion
B. indicate that the explosion is slowing
C. show that it doesn't matter since food supply grows equally fast
D. show that the populat
PHY 1020 Test 1
"Smart Rocks" are considered for
A. geologic dating
B. ballistic missile defense
C. nuclear power
D. solar power
ballistic missile defense
One watt is equivalent to
A. one joule/second
B. one coulomb/second
C. one calorie/second
D. one hor
Unit Conversion
Lets convert these units to the standard Meter-Kilogram-Second (MKS)
units used in this course:
1 mile = 1.609 km = 1609 In; so 164 miles X (1609 m/ 1 mile) = 2.64 X 105 m
2.5 hr X (60 mink-19X (60 s/min) = 9000 s ; also 1.5 hr = 5400 s
;=
Distance traveled = Ax = x2 x1 (m) ; Time traveled = At = t2 t1 (s)
Average velocity 7= AX/At (m/s) ; speed is magnitude of velocity
. . Ax dx
Instantaneous veloclty v 41:13) dt (m/s)
Average acceleration E: Av/ At (m/sz)
Instantaneous acceleration a = li
Now Mary swims directly up stream at 3 m/s
relative to still water. What is her velocity relative
to the bank?
A. 3m/sj
D. 1m/sj
iClicker question
B. 5m/sj
E. -1m/sj
c.0m/sj
S. L. Tabor Florida State University
up
C M
+3m
8.1": 6+ =
_zj+3'j=+1j
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Important special case of constant acceleration a
The most common case in everyday life of constant a is for objects falling
which accelerate at a = g = 9.81 m/s2 downward.
constanta=%; So v=fadt=afdt=K+at =v0+at
dx 1
V=E;
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EXAMPLE
You drove 164 miles from Jacksonville to Tallahassee. You drove 80
miles at 109 miles/hr [80 mi/ 109 mph = 0.73 hr], stopped for lunch for 1
hour, then drove 84 mi at 109 miles/hr [84 mi/ 109 mph = 0.77 hr]. This
took
But you were out of luck! The trooper had taken PHY2048 at FSU.
She said, That may have been you average velocity, but state law says
your instantaneous velocity cannot exceed 70 mph, and my Doppler-
effect radar gun shows your instantaneous velocity was
KINEMATICS
Example
Mary swims at 3 m/s relative to still water. If she
swims directly downstream in a river which has a
uniform current of 2 m/s, what is her velocity relative
to the bank? Assume the current ows in the y
direction so 2" = 2 g j . Then Mar
Recent reports discussing the population bomb
A. verify that the population will expand above 20 billion
B. indicate that the explosion is slowing
C. show that it doesn't matter since food supply grows equally fast
D. show that the population of the world
"Smart Rocks" are considered for
A. geologic dating
B. ballistic missile defense
C. nuclear power
D. solar power
One watt is equivalent to
A. one joule/second
B. one coulomb/second
C. one calorie/second
D. one horsepower
The asteroid that killed the dinos
An indication that light is a wave is
A. that it has dark bands in the diffraction pattern
B. that it passes through glass
C. that it reflects off surfaces
D. its high speed
Answer: A. that it has dark bands in the diffraction pattern
The colors of an oil
Problem Solving Strategies
Read the Problem
Recognize the Physics Principle
Algebraically solve for the unknown
DO NOT do algebra with numerical values!
Calculate the Answer
Determine what is given and what can be deduced
Develop a Solution
Use variables
PHY 1020
Exam 2 Study Guide
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Chapter 5: Reactions, Reactors, and Bombs
Recent reports discussing the population bomb
A. verify that the population will expand above 20 billion
B. Indicate the explosion is slowing
C. Show that it doesn't matter sinc
Lab 1
Boyles law
1.
Objective:
To measure the number of moles (n) of air enclosed in a tube using Boyles law.
2.
Apparatus:
A graduated cylinder fitted to a wooden
base at the closed end and a piston at the
other end. The piston is fitted with a
platform
Lab 2
The Pressure Law
1.
Objective:
To measure the number of moles (n) of air enclosed in a tube using the pressure law.
Also, we will attempt to measure the absolute zero of temperatrure.
2.
Apparatus:
n moles of air are enclosed in a rigid
spherical co
Lab 3
Specific Heat of Metals
1.
Objective:
The purpose of this experiment is to measure the specific heat capacity of lead and
aluminum available in different size and forms using the principle of method of mixtures.
2.
Equipment:
An arrangement to boil
LAB 11
Charging and discharging a capacitor
Objective:
To measure the capacitance of a capacitor by measuring its time constant.
Equipment: A capacitor, a resistor, a battery, a voltmeter and connecting leads
Theory:
When a capacitor is connected to a bat
Lab 9
Ohms Law, Resistance and Resistivity
1.
Objective:
(i)
(ii)
(iii)
The purpose of this experiment are:
To measure the resistance of a given length of wire.
To study the variation of resistance with length of the conductor.
To measure the reistivity o
Lab 6
Newtons law of Cooling
1.
Objective:
The purpose of this experiment is to use Newtons law of cooling to obtain a value for the
time constant of a metal thermometer and a glass thermometer.
2.
Equipment:
Metal stem dial thermometer, mercury-in-glass
Lab 10
Measurement of Resistance Wheatstone Bridge method
1.
Objective:
To measure the resistance of a conductor using Wheatstone Bridge method.
2.
Equipment:
Wheatstone bridge apparatus, center zero galvanometer, connecting leads,
crocodile clips, a 1.5-