Unit 3: Gravitational, Electric and Magnetic Fields
Are You Ready? p. 284-285 #1, 2, 5, 7, 11, 12, 13, 14, 15, 18, 21, 24, 25, 26
Chapter 6 Gravitational Fields
Topic
1
Mini Investigation: Artificial Gravity
p. 287
2
6.1 Newtonian Gravitation
p. 288-295
Universal Law of Gravitation
Gravity
The Value of g
Calculating the Value of G (BIG “G”)
Gravitational Fields
3
6.2 Orbits
p. 297-302
Satellites and Space Stations
Satellites in Circular Orbits
Video: How Satellites Work
Video: How Many Satellites are Currently in Orbit
4
Research This: Space Junk
5
6.4 Physics Journal :General Relativity
p. 306-307
6
Chapter 6 Self Quiz & Review
Workbook
Study Guide
p. 29
p. 88-91
p. 30-31
p. 92-93
Textbook Homework
p. 287 A, B, C, D, E
p. 303 # 1, 2, 4, 8
p. 302 A, B, C, D
p. 95
p. 97-98
p. 311 #1-7
Chapter 7 Electric Charges and Electric Fields
Topic
1
7.1 Properties of Electric Charges (student)
TB p. 320-326
1. What is the Law of Electric Charge?
2. What is Electric Charge?
3. Define Conductors and Insulators.
4. How is static electricity related to placing a charge on an
insulator?
5. What happens when a charge is placed on a conductor such
as a metal sphere?
Workbook Study Guide
p. 99-100
Textbook Homework
p. 326 # 2, 6, 7, 9
2
3
6. Use the electrostatic series to predict the charge of an
object when charging by friction
7. With the aid of a diagram, explain each of the processes
below:
a) charging by friction
b) charging by induced charge separation
c) grounding
d) charging by contact
e) charging by induction
3. Section 7.1 Review TB pg 326 #2,4,6,7,8,9
4. Gizmo: Coulomb Force
7.2 Coulomb’s Law
The Electric Force
1. Understand the procedure of Coulomb’s experiment where
he determined that FE α1/r2 and FE α q1q2 that led to
Coulomb’s Law, FE = kq1q2/r2
Comparing Coulomb’s Law and Universal Gravitation
2. State three similarities and three differences in Coulomb’s
Law and the Law of Universal Gravitation
The Superposition Principle
3. Find the net force (sum of forces, ∑ F) acting on a charge.
7.3 Electric Fields
Properties of Electric Fields
1. Define the field theory and relate to magnetic and
gravitational fields.
2. Understand the use of a positive test charge to map out the
electric field of a point charge.
3. Define electric field. ( є = FE on q1/q1(q1 is the positive test
charge) )
4. Determine the magnitude of an electric field at any point a
distance r from the point charge.
Electric Field Lines
5. Understand the characteristics (and rules) of field lines.
Uniform Electric Fields
6. Study and describe the electric field between two parallel
plates.
Electrostatic Precipitators and Electric Fields in Nature
p. 55-60
p. 101-102
p. 332 #1, 2, 3
p. 333 #2, 4, 7, 9
p. 61-66
p. 103-104
p. 337 #1, 2, 3
p. 345 #1, 2, 3, 4, 5, 8
4
5
6
7. Describe how an electrostatic precipitator works and how
hammerhead sharks use electric fields.
7.4 Potential Difference and Electric Potential
Work and Electric Potential Difference
1. Use changes in gravitational potential energy to explain
the concept of electric potential energy stored in the system
of two charges. (W = ∆EE = qEd) and (EE = kq1q2/r)
2. What is electric potential, the symbol for electric potential,
and the equation used to determine the electric potential at a
distance r from a spherical point charge q1. (V = EE/q = kq1/r)
3. Define volt.
4. Define electric potential difference. (ΔEE = qΔV)
5. Describe the characteristics and equations used to explain
and calculate the electric field at any point in the space
between two large parallel plates.
6. Review Tutorial 2 : Solving Problems Related to Electric
Potential on pages 352 and 353
7.5 Electric Potential and Electric Potential Energy Due to
Point Charges
1. Electric Potential due to a point charge (V = kq/r)
2. Electric Potential Energy due to two point charges (EE =
kq1q2/r)
7.6 The Millikan Experiment: Determining the Elementary
Charge
1. What were the two fundamental questions regarding the
nature of electric charge at the turn of the twentieth century?
2. State three assumptions Millikan made.
3. Describe Millikan’s electrical microbalance.
4. Explain the balance of forces in a droplet in the electrical
microbalance.
5. Explain the derivation of the equation q = mgr/ΔVb
6. How did Millikan determine the elementary charge?
7. Use the equation q = Ne to solve problems.
p. 67-74
p. 73
p. 105-106
p. 349 #1, 2, 3
p. 353 #1, 2, 3
p. 354 #1, 2, 3, 4, 5, 7
p. 107-108
p. 360 #1, 4
p. 361 #3, 4, 6
p. 109-110
p. 365 #3, 5, 6
p. 113-113
p. 370 #1-17, 59, 65, 71,
73, 75, 77, 80, 85, 87
Video: Millikan Experiment
Video: Millikan Experiment: St. Mary’s Univ.
7
8. Review the Tutorial 1, p. 365-366
Chapter 7 Review
Chapter 8 Magnetic Fields
Topic
1
8.1 Natural Magnetism and Electromagnetism
Auroras
1. What causes the auroa borealis?
Permanent Magnets
2. State the Law of Magnetic Poles
2. Explain how iron filings and small test compasses can be
used to detect and depict a magnetic field.
3. What is the symbol for magnetic field. How is the
magnitude determined?
4. What is one key difference between electric fields and
magnetic fields?
5. How are electric field of an electric dipole and a magnetic
field of a bar magnet similar?
Earth’s Magnetic Field
6. Compare the location of Earth’s magnetic and geographic
poles.
7. What is probably the cause of Earth’s changing magnetic
fields.
Electromagnetism
8. What observation allowed Oersted to formulate the basic
principle of electromagnetism?
9. In this textbook conventional current is used, not electron
flow. How do these two differ?
10. What is the right hand rule for a straight conductor?
11. Consider a loop with current passing through. Where is the
magnetic field the strongest? (include a diagram)?
12. What is a solenoid? Describe the magnetic field of a
solenoid.
13. What is the right hand rule for a solenoid?
12. How is a solenoid converted into an electromagnet? What
factors affect the strength of an electromagnet? What are
some applications of electromagnets?
Workbook Study Guide
p. 78-81
p. 114-115
Textbook Homework
p. 385 #3, 4, 5
2
3
4
8.2 Magnetic Force on Moving Charges
p. 81-83
1. What is the unit of magnetic field strength? Use an equation
to define this unit.
A Charge in a Magnetic Field
2. What is the Third Hand Rule for Moving Charge in a
magnetic field?
3. What factors affect the magnitude of magnetic force (FM) on
a charged particle?
4. Use the magnetic force equation in problem solving.
(FM = qvBsinθ)
8.3 Magnetic Force on a Conductor
p.82
1. What is the expression for the force acting a conductor?
2. Define the tesla (T).
3. What is the magnitude and units of k and the significance of
this?
4. What two important observations can be made from the use
of a conductor in a magnetic field? (page 405)
5. When two wires with current flowing through them are
placed side by side, they will attract or repel. Explain.
6. Understand the significance of the statement, “ if a current
produces a force on a magnet, then the magnet must produce
an equal but opposite force on the current.”
7. Explain how both the Loudspeakers and Electromagnetic
Pumps are good examples of the magnetic force on a
conductor.
8.4 Motion of Charged Particles in Magnetic Fields
p. 83-84
1. Explain a simple right hand rule that can be used to
determine the direction of the magnetic force on a positively
charged particle. (pg 387)
2. Using the rule above, what changes are made when the
charge is negative?
3. Why is the magnetic force on a charged particle referred to
as a purely deflecting force? Explain.
4. Using Figure 2 (b) on page 398, explain why a charged
particle undergoes uniform circular motion in a uniform
magnetic field.
5. Using the third hand rule, explain direction of the force
acting on a charge as shown in Figure 11 on page 404
p. 116-117
p. 390 #4
p. 391 #3, 6, 7
p.118-119
p. 395 #1, 2
p.120-121
p. 401 #2, 4
p. 404 #1, 3, 5, 6
6
6. Review sample problem 1, page 399 (knowledge of
conservation of energy and centripetal motion are required).
8. Explain the theory behind the operation of a mass
spectrometer.
9. Describe the Earth’s two major radiation belts (areas
composed of charged particles trapped by the magnetic field of
the Earth.)
Video: Charged particles in a magnetic field
8.5 Applications of Electric and Magnetic Fields
p. 405-409
1. For each of the following applications:
1) RFID Chips
2) MR Fluid Dampers
3) Medical Applications
a) Describe the design of the device
b) Explain the role magnetic fields play
b) Use(s) of this technology
Chapter 8 Review:
7
Unit Test: Fluids
5
p. 122-123
p. 417-420 #1-7, 21, 22,
23, 25, 26, 29, 33, 38, 39,
40, 44, 50, 58, 66