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General Physics EXAM STUDY GUIDE
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Semester 2 2009
Barnard / Dominic
Multiple choice (scantron) - questions will require calculations, interpretation of diagrams and concepts.
Exam counts 10% of your semester grade
Topics: Newton’s laws of motion, energy, center of mass, impulse and momentum, circular motion, waves & wireless
technology
Bring a calculator to the exam
You must turn in your textbook when you take your exam
WHAT TO DO:
1) For each topic, make a list of all quantities, their symbols and units
2) Make a list of all equations that model each topic
3) Make up example problems to solve for each variable (one at a time!) in the equations.
4) Review textbook chapters: 4, 7-9, 13, 25 (sec.1-8), 26 (sec. 5-8) 37 (sec. 7-8) look at the Summary; Review questions
and Think and Explain questions for each chapter.
5) Review your test corrections
6) Review your class notes, worksheets, labs
7) Organize the terms (reverse side) by topic and make a concept map of the ideas for each topic
Universal Gravitation (Ch. 10)
Describe the Cavendish experiment and explain why it was so
important.
What does and does not cause gravitational attraction between
two objects?
Do problems that show how the force of gravity between two
objects changes if
• one or both of their masses change
• the distance between them changes
• the distance between them AND their masses change
Forces and Newton’s Laws of Motion
Be able to draw force diagrams for 3rd law pairs of objects and
identify the shared force(s) between these objects.
Be able to draw or recognize force diagrams for an object in a
state of rest, constant velocity, or acceleration.
Understand what happens to an object as long as a net force is
acting on it.
Understand the difference between weight, mass, and
gravitational field strength. Be able to calculate these
quantities.
Understand what the slope of a Net force vs. acceleration
graph means.
Center of Mass
Be able to determine the speed of the center of mass of a
system of 2 objects.
Distinguish between stable, unstable and neutral equilibrium
and be able to explain why object topple.
Momentum and Impulse
Define momentum and distinguish between momentum, mass,
and velocity. Distinguish momentum from change in
momentum.
Define impulse and distinguish between impulse and net force.
Understand how to calculate impulse from a Net force vs. time
graph.
Describe the relationship between impulse and momentum.
Use the concepts of impulse and momentum to explain
"cushioning" and other effects.
State and apply the Law of Conservation of Momentum.
Relate the concepts of impulse, momentum, and the Law of
Conservation of Momentum to concepts of acceleration,
net force and mass.
Energy
Be able to identify types of energy that are transferred
between objects (kinetic, gravitational potential, elastic
potential, dissipated).
Draw energy bar charts that describe energy transfers between
objects at different points in time.
Write and solve conservation of energy problems that are
consistent with these bar chart diagrams.
State and apply the Law of Conservation of Energy.
Distinguish between total energy and change in energy
Understand what the slope of a kinetic energy vs. velocity
squared graph means.
Circular Motion
Distinguish average velocity from instantaneous velocities
(such as initial and final velocities) and from change in
velocity.
Be able to draw and recognize correct force diagrams for
objects moving in a curved path.
Be able to calculate velocity, centripetal acceleration and net
force for an object moving in a circular path.
For a person on a roller coaster, be able to calculate the normal
force at hills, valleys and loops.
Waves and Wireless technology
Understand how magnets and wires can generate an electric
current (electromagnetic induction).
Understand what is vibrating in a mechanical wave (sound)
compared to an EM wave.
Give examples of mechanical waves and EM waves.
Identify parts of a wave such as amplitude and wavelength.
Calculate wave quantities such as wavelength, period,
frequency, velocity.
Know the speed of electromagnetic waves through space = c
Understand what causes objects to resonate.
Explain how resonance relates to sound and wireless
technology
Understand how wireless devices send and receive signals.
Semester 2 Vocabulary
AM
FM
Amplitude
Analog signal
Antenna
Bar code
Binary code
average velocity
c
cell tower
centripetal acceleration
change in momentum
change in velocity
circular motion
coil of wire
conservation of energy
conservation of momentum
constant speed
constant velocity
cycles per second
Digital signal
dissipated energy
elastic potential energy
electromagnetic wave
energy bar charts
equilibrium
force
force diagram
Frequency
friction force
gravitational acceleration
gravitational field strength
gravitational force
gravitational potential energy
harmonic
hertz (kilo-, mega-, giga-)
impulse
inertia
instantaneous velocity
Joule
Kilogram
Kilogram meter per second
Kilogram meter per second squared
kinetic energy
linear acceleration
magnet
Mass
Meter per second
Meter per second squared
momentum
Natural frequency
net force
Newtons
Newton/kilogram
Newton second
Newton meter
Normal force
Period
Pitch
Pulse
Radio wave
Resonance
Standing wave
Slope
Sound wave
tension force
vibration
Wave
Wave speed
Wavelength
Weight