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22:46

# High School Physics Online CourseProf. Vincent Selhorst-Jones, M.F.A. Facebook Twitter More

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436 ratings • 28 reviews
• Level Intermediate
• 34 Lessons (22hr : 46min)
• Audio: English
• English

Join Professor Vincent Selhorst-Jones’ High School Physics course which combines his scientific background, acting training, and years of teaching experience to help you fully comprehend concepts rather than just “plug 'n' chug” equations. Professor Selhorst-Jones is passionate about sharing his love of physics and will help you understand how a problem comes together, what it means, and why you should care.

## Section 1: Motion

Math Review 16:49
Intro 0:00
The Metric System 0:26
Distance, Mass, Volume, and Time 0:27
Scientific Notation 1:40
Examples: 47,000,000,000 and 0.00000002 1:41
Significant Figures 3:18
Significant Figures Overview 3:19
Properties of Significant Figures 4:04
How Significant Figures Interact 7:00
Trigonometry Review 8:57
Pythagorean Theorem, sine, cosine, and tangent 8:58
Inverse Trigonometric Functions 9:48
Inverse Trigonometric Functions 9:49
Vectors 10:44
Vectors 10:45
Scalars 12:10
Scalars 12:11
Breaking a Vector into Components 13:17
Breaking a Vector into Components 13:18
Length of a Vector 13:58
Length of a Vector 13:59
Relationship Between Length, Angle, and Coordinates 14:45
One Dimensional Kinematics 26:02
Intro 0:00
Position 0:06
Definition and Example of Position 0:07
Distance 1:11
Definition and Example of Distance 1:12
Displacement 1:34
Definition and Example of Displacement 1:35
Comparison 2:45
Distance vs. Displacement 2:46
Notation 2:54
Notation for Location, Distance, and Displacement 2:55
Speed 3:32
Definition and Formula for Speed 3:33
Example: Speed 3:51
Velocity 4:23
Definition and Formula for Velocity 4:24
∆ - Greek: 'Delta' 5:01
∆ or 'Change In' 5:02
Acceleration 6:02
Definition and Formula for Acceleration 6:03
Example: Acceleration 6:38
Gravity 7:31
Gravity 7:32
Formulas 8:44
Kinematics Formula 1 8:45
Kinematics Formula 2 9:32
Definitional Formulas 14:00
Example 1: Speed of a Rock Being Thrown 14:12
Example 2: How Long Does It Take for the Rock to Hit the Ground? 15:37
Example 3: Acceleration of a Biker 21:09
Example 4: Velocity and Displacement of a UFO 22:43
Multi-Dimensional Kinematics 29:59
Intro 0:00
What's Different About Multiple Dimensions? 0:07
Scalars and Vectors 0:08
A Note on Vectors 2:12
Indicating Vectors 2:13
Position 3:03
Position 3:04
Distance and Displacement 3:35
Distance and Displacement: Definitions 3:36
Distance and Displacement: Example 4:39
Speed and Velocity 8:57
Speed and Velocity: Definition & Formulas 8:58
Speed and Velocity: Example 10:06
Speed from Velocity 12:01
Speed from Velocity 12:02
Acceleration 14:09
Acceleration 14:10
Gravity 14:26
Gravity 14:27
Formulas 15:11
Formulas with Vectors 15:12
Example 1: Average Acceleration 16:57
Example 2A: Initial Velocity 19:14
Example 2B: How Long Does It Take for the Ball to Hit the Ground? 21:35
Example 2C: Displacement 26:46
Frames of Reference 18:36
Intro 0:00
Fundamental Example 0:25
Fundamental Example Part 1 0:26
Fundamental Example Part 2 1:20
General Case 2:36
Particle P and Two Observers A and B 2:37
Speed of P from A's Frame of Reference 3:05
Acceleration Shows the Change in Velocity 3:23
Acceleration when Velocity is Constant 3:48
Multi-Dimensional Case 4:35
Multi-Dimensional Case 4:36
Some Notes 5:04
Choosing the Frame of Reference 5:05
Example 1: What Velocity does the Ball have from the Frame of Reference of a Stationary Observer? 7:27
Example 2: Velocity, Speed, and Displacement 9:26
Example 3: Speed and Acceleration in the Reference Frame 12:44
Uniform Circular Motion 16:34
Intro 0:00
Centripetal Acceleration 1:21
Centripetal Acceleration of a Rock Being Twirled Around on a String 1:22
Looking Closer: Instantaneous Velocity and Tangential Velocity 2:35
Magnitude of Acceleration 3:55
Centripetal Acceleration Formula 5:14
You Say You Want a Revolution 6:11
What is a Revolution? 6:12
How Long Does it Take to Complete One Revolution Around the Circle? 6:51
Example 1: Centripetal Acceleration of a Rock 7:40
Example 2: Magnitude of a Car's Acceleration While Turning 9:20
Example 3: Speed of a Point on the Edge of a US Quarter 13:10

## Section 2: Force

Newton's 1st Law 12:37
Intro 0:00
Newton's First Law/ Law of Inertia 2:45
A Body's Velocity Remains Constant Unless Acted Upon by a Force 2:46
Mass & Inertia 4:07
Mass & Inertia 4:08
Mass & Volume 5:49
Mass & Volume 5:50
Mass & Weight 7:08
Mass & Weight 7:09
Example 1: The Speed of a Rocket 8:47
Example 2: Which of the Following Has More Inertia? 10:06
Example 3: Change in Inertia 11:51
Newton's 2nd Law: Introduction 27:05
Intro 0:00
Net Force 1:42
Consider a Block That is Pushed On Equally From Both Sides 1:43
What if One of the Forces was Greater Than the Other? 2:29
The Net Force is All the Forces Put Together 2:43
Newton's Second Law 3:14
Net Force = (Mass) x (Acceleration) 3:15
Units 3:48
The Units of Newton's Second Law 3:49
Free-Body Diagram 5:34
Free-Body Diagram 5:35
Special Forces: Gravity (Weight) 8:05
Force of Gravity 8:06
Special Forces: Normal Force 9:22
Normal Force 9:23
Special Forces: Tension 10:34
Tension 10:35
Example 1: Force and Acceleration 12:19
Example 2: A 5kg Block is Pushed by Five Forces 13:24
Example 3: A 10kg Block Resting On a Table is Tethered Over a Pulley to a Free-Hanging 2kg Block 16:30
Newton's 2nd Law: Multiple Dimensions 27:47
Intro 0:00
Newton's 2nd Law in Multiple Dimensions 0:12
Newton's 2nd Law in Multiple Dimensions 0:13
Components 0:52
Components 0:53
Example: Force in Component Form 1:02
Special Forces 2:39
Review of Special Forces: Gravity, Normal Force, and Tension 2:40
Normal Forces 3:35
Why Do We Call It the Normal Forces? 3:36
Normal Forces on a Flat Horizontal and Vertical Surface 5:00
Normal Forces on an Incline 6:05
Example 1: A 5kg Block is Pushed By a Force of 3N to the North and a Force of 4N to the East 10:22
Example 2: A 20kg Block is On an Incline of 50° With a Rope Holding It In Place 16:08
Example 3: A 10kg Block is On an Incline of 20° Attached By Rope to a Free-hanging Block of 5kg 20:50
Newton's 2nd Law: Advanced Examples 42:05
Intro 0:00
Block and Tackle Pulley System 0:30
A Single Pulley Lifting System 0:31
A Double Pulley Lifting System 1:32
A Quadruple Pulley Lifting System 2:59
Example 1: A Free-hanging, Massless String is Holding Up Three Objects of Unknown Mass 4:40
Example 2: An Object is Acted Upon by Three Forces 10:23
Example 3: A Chandelier is Suspended by a Cable From the Roof of an Elevator 17:13
Example 4: A 20kg Baboon Climbs a Massless Rope That is Attached to a 22kg Crate 23:46
Example 5: Two Blocks are Roped Together on Inclines of Different Angles 33:17
Newton's Third Law 16:47
Intro 0:00
Newton's Third Law 0:50
Newton's Third Law 0:51
Everyday Examples 1:24
Hammer Hitting a Nail 1:25
Swimming 2:08
Car Driving 2:35
Walking 3:15
Note 3:57
Newton's Third Law Sometimes Doesn't Come Into Play When Solving Problems: Reason 1 3:58
Newton's Third Law Sometimes Doesn't Come Into Play When Solving Problems: Reason 2 5:36
Example 1: What Force Does the Moon Pull on Earth? 7:04
Example 2: An Astronaut in Deep Space Throwing a Wrench 8:38
Example 3: A Woman Sitting in a Bosun's Chair that is Hanging from a Rope that Runs Over a Frictionless Pulley 12:51
Friction 50:11
Intro 0:00
Introduction 0:04
Our Intuition - Materials 0:30
Our Intuition - Weight 2:48
Our Intuition - Normal Force 3:45
The Normal Force and Friction 4:11
Two Scenarios: Same Object, Same Surface, Different Orientations 4:12
Friction is Not About Weight 6:36
Friction as an Equation 7:23
Summing Up Friction 7:24
Friction as an Equation 7:36
The Direction of Friction 10:33
The Direction of Friction 10:34
A Quick Example 11:16
Which Block Will Accelerate Faster? 11:17
Static vs. Kinetic 14:52
Static vs. Kinetic 14:53
Static and Kinetic Coefficient of Friction 16:31
How to Use Static Friction 17:40
How to Use Static Friction 17:41
Some Examples of μs and μk 19:51
Some Examples of μs and μk 19:52
A Remark on Wheels 22:19
A Remark on Wheels 22:20
Example 1: Calculating μs and μk 28:02
Example 2: At What Angle Does the Block Begin to Slide? 31:35
Example 3: A Block is Against a Wall, Sliding Down 36:30
Example 4: Two Blocks Sitting Atop Each Other 40:16
Force & Uniform Circular Motion 26:45
Intro 0:00
Centripetal Force 0:46
Equations for Centripetal Force 0:47
Centripetal Force in Action 1:26
Where Does Centripetal Force Come From? 2:39
Where Does Centripetal Force Come From? 2:40
Centrifugal Force 4:05
Centrifugal Force Part 1 4:06
Centrifugal Force Part 2 6:16
Example 1: Part A - Centripetal Force On the Car 8:12
Example 1: Part B - Maximum Speed the Car Can Take the Turn At Without Slipping 8:56
Example 2: A Bucket Full of Water is Spun Around in a Vertical Circle 15:13
Example 3: A Rock is Spun Around in a Vertical Circle 21:36

## Section 3: Energy

Work 28:34
Intro 0:00
Equivocation 0:05
Equivocation 0:06
Introduction to Work 0:32
Scenarios: 10kg Block on a Frictionless Table 0:33
Scenario: 2 Block of Different Masses 2:52
Work 4:12
Work and Force 4:13
Paralleled vs. Perpendicular 4:46
Work: A Formal Definition 7:33
An Alternate Formula 9:00
An Alternate Formula 9:01
Units 10:40
Unit for Work: Joule (J) 10:41
Example 1: Calculating Work of Force 11:32
Example 2: Work and the Force of Gravity 12:48
Example 3: A Moving Box & Force Pushing in the Opposite Direction 15:11
Example 4: Work and Forces with Directions 18:06
Example 5: Work and the Force of Gravity 23:16
Energy: Kinetic 39:07
Intro 0:00
Types of Energy 0:04
Types of Energy 0:05
Conservation of Energy 1:12
Conservation of Energy 1:13
What is Energy? 4:23
Energy 4:24
What is Work? 5:01
Work 5:02
Circular Definition, Much? 5:46
Circular Definition, Much? 5:47
Derivation of Kinetic Energy (Simplified) 7:44
Simplified Picture of Work 7:45
Consider the Following Three Formulas 8:42
Kinetic Energy Formula 11:01
Kinetic Energy Formula 11:02
Units 11:54
Units for Kinetic Energy 11:55
Conservation of Energy 13:24
Energy Cannot be Made or Destroyed, Only Transferred 13:25
Friction 15:02
How Does Friction Work? 15:03
Example 1: Velocity of a Block 15:59
Example 2: Energy Released During a Collision 18:28
Example 3: Speed of a Block 22:22
Example 4: Speed and Position of a Block 26:22
Energy: Gravitational Potential 28:10
Intro 0:00
Why Is It Called Potential Energy? 0:21
Why Is It Called Potential Energy? 0:22
Introduction to Gravitational Potential Energy 1:20
Consider an Object Dropped from Ever-Increasing heights 1:21
Gravitational Potential Energy 2:02
Gravitational Potential Energy: Derivation 2:03
Gravitational Potential Energy: Formulas 2:52
Gravitational Potential Energy: Notes 3:48
Conservation of Energy 5:50
Conservation of Energy and Formula 5:51
Example 1: Speed of a Falling Rock 6:31
Example 2: Energy Lost to Air Drag 10:58
Example 3: Distance of a Sliding Block 15:51
Example 4: Swinging Acrobat 21:32
Energy: Elastic Potential 44:16
Intro 0:00
Introduction to Elastic Potential 0:12
Elastic Object 0:13
Spring Example 1:11
Hooke's Law 3:27
Hooke's Law 3:28
Example of Hooke's Law 5:14
Elastic Potential Energy Formula 8:27
Elastic Potential Energy Formula 8:28
Conservation of Energy 10:17
Conservation of Energy 10:18
You Ain't Seen Nothin' Yet 12:12
You Ain't Seen Nothin' Yet 12:13
Example 1: Spring-Launcher 13:10
Example 2: Compressed Spring 18:34
Example 3: A Block Dangling From a Massless Spring 24:33
Example 4: Finding the Spring Constant 36:13
Power & Simple Machines 28:54
Intro 0:00
Introduction to Power & Simple Machines 0:06
What's the Difference Between a Go-Kart, a Family Van, and a Racecar? 0:07
Consider the Idea of Climbing a Flight of Stairs 1:13
Power 2:35
P= W / t 2:36
Alternate Formulas 2:59
Alternate Formulas 3:00
Units 4:24
Units for Power: Watt, Horsepower, and Kilowatt-hour 4:25
Block and Tackle, Redux 5:29
Block and Tackle Systems 5:30
Machines in General 9:44
Levers 9:45
Ramps 10:51
Example 1: Power of Force 12:22
Example 2: Power &Lifting a Watermelon 14:21
Example 3: Work and Instantaneous Power 16:05
Example 4: Power and Acceleration of a Race car 25:56

## Section 4: Momentum

Center of Mass 36:55
Intro 0:00
Introduction to Center of Mass 0:04
Consider a Ball Tossed in the Air 0:05
Center of Mass 1:27
Definition of Center of Mass 1:28
Example of center of Mass 2:13
Center of Mass: Derivation 4:21
Center of Mass: Formula 6:44
Center of Mass: Formula, Multiple Dimensions 8:15
Center of Mass: Symmetry 9:07
Center of Mass: Non-Homogeneous 11:00
Center of Gravity 12:09
Center of Mass vs. Center of Gravity 12:10
Newton's Second Law and the Center of Mass 14:35
Newton's Second Law and the Center of Mass 14:36
Example 1: Finding The Center of Mass 16:29
Example 2: Finding The Center of Mass 18:55
Example 3: Finding The Center of Mass 21:46
Example 4: A Boy and His Mail 28:31
Linear Momentum 22:50
Intro 0:00
Introduction to Linear Momentum 0:04
Linear Momentum Overview 0:05
Consider the Scenarios 0:45
Linear Momentum 1:45
Definition of Linear Momentum 1:46
Impulse 3:10
Impulse 3:11
Relationship Between Impulse & Momentum 4:27
Relationship Between Impulse & Momentum 4:28
Why is It Linear Momentum? 6:55
Why is It Linear Momentum? 6:56
Example 1: Momentum of a Skateboard 8:25
Example 2: Impulse and Final Velocity 8:57
Example 3: Change in Linear Momentum and magnitude of the Impulse 13:53
Example 4: A Ball of Putty 17:07
Collisions & Linear Momentum 40:55
Intro 0:00
Investigating Collisions 0:45
Momentum 0:46
Center of Mass 1:26
Derivation 1:56
Extending Idea of Momentum to a System 1:57
Impulse 5:10
Conservation of Linear Momentum 6:14
Conservation of Linear Momentum 6:15
Conservation and External Forces 7:56
Conservation and External Forces 7:57
Momentum Vs. Energy 9:52
Momentum Vs. Energy 9:53
Types of Collisions 12:33
Elastic 12:34
Inelastic 12:54
Completely Inelastic 13:24
Everyday Collisions and Atomic Collisions 13:42
Example 1: Impact of Two Cars 14:07
Example 2: Billiard Balls 16:59
Example 3: Elastic Collision 23:52
Example 4: Bullet's Velocity 33:35

## Section 5: Gravity

Gravity & Orbits 34:53
Intro 0:00
Law of Universal Gravitation 1:39
Law of Universal Gravitation 1:40
Force of Gravity Equation 2:14
Gravitational Field 5:38
Gravitational Field Overview 5:39
Gravitational Field Equation 6:32
Orbits 9:25
Orbits 9:26
The 'Falling' Moon 12:58
The 'Falling' Moon 12:59
Example 1: Force of Gravity 17:05
Example 2: Gravitational Field on the Surface of Earth 20:35
Example 3: Orbits 23:15
Example 4: Neutron Star 28:38

## Section 6: Waves

Intro to Waves 35:35
Intro 0:00
Pulse 1:00
Introduction to Pulse 1:01
Wave 1:59
Wave Overview 2:00
Wave Types 3:16
Mechanical Waves 3:17
Electromagnetic Waves 4:01
Matter or Quantum Mechanical Waves 4:43
Transverse Waves 5:12
Longitudinal Waves 6:24
Wave Characteristics 7:24
Amplitude and Wavelength 7:25
Wave Speed (v) 10:13
Period (T) 11:02
Frequency (f) 12:33
v = λf 14:51
Wave Equation 16:15
Wave Equation 16:16
Angular Wave Number 17:34
Angular Frequency 19:36
Example 1: CPU Frequency 24:35
Example 2: Speed of Light, Wavelength, and Frequency 26:11
Example 3: Spacing of Grooves 28:35
Example 4: Wave Diagram 31:21
Waves, Cont. 52:57
Intro 0:00
Superposition 0:38
Superposition 0:39
Interference 1:31
Interference 1:32
Visual Example: Two Positive Pulses 2:33
Visual Example: Wave 4:02
Phase of Cycle 6:25
Phase Shift 7:31
Phase Shift 7:32
Standing Waves 9:59
Introduction to Standing Waves 10:00
Visual Examples: Standing Waves, Node, and Antinode 11:27
Standing Waves and Wavelengths 15:37
Standing Waves and Resonant Frequency 19:18
Doppler Effect 20:36
When Emitter and Receiver are Still 20:37
When Emitter is Moving Towards You 22:31
When Emitter is Moving Away 24:12
Doppler Effect: Formula 25:58
Example 1: Superposed Waves 30:00
Example 2: Superposed and Fully Destructive Interference 35:57
Example 3: Standing Waves on a String 40:45
Example 4: Police Siren 43:26
Example Sounds: 800 Hz, 906.7 Hz, 715.8 Hz, and Slide 906.7 to 715.8 Hz 48:49
Sound 36:24
Intro 0:00
Speed of Sound 1:26
Speed of Sound 1:27
Pitch 2:44
High Pitch & Low Pitch 2:45
Normal Hearing 3:45
Infrasonic and Ultrasonic 4:02
Intensity 4:54
Intensity: I = P/A 4:55
Intensity of Sound as an Outwardly Radiating Sphere 6:32
Decibels 9:09
Human Threshold for Hearing 9:10
Decibel (dB) 10:28
Sound Level β 11:53
Loudness Examples 13:44
Loudness Examples 13:45
Beats 15:41
Beats & Frequency 15:42
Audio Examples of Beats 17:04
Sonic Boom 20:21
Sonic Boom 20:22
Example 1: Firework 23:14
Example 2: Intensity and Decibels 24:48
Example 3: Decibels 28:24
Example 4: Frequency of a Violin 34:48
Light 19:38
Intro 0:00
The Speed of Light 0:31
Speed of Light in a Vacuum 0:32
Unique Properties of Light 1:20
Lightspeed! 3:24
Lightyear 3:25
Medium 4:34
Light & Medium 4:35
Electromagnetic Spectrum 5:49
Electromagnetic Spectrum Overview 5:50
Electromagnetic Wave Classifications 7:05
Microwave 8:30
Infrared and Visible Spectrum 9:02
Ultraviolet, X-rays, and Gamma Rays 9:33
So Much Left to Explore 11:07
So Much Left to Explore 11:08
Example 1: How Much Distance is in a Light-year? 13:16
Example 2: Electromagnetic Wave 16:50
Example 3: Radio Station & Wavelength 17:55

## Section 7: Thermodynamics

Fluids 42:52
Intro 0:00
Fluid? 0:48
What Does It Mean to be a Fluid? 0:49
Density 1:46
What is Density? 1:47
Formula for Density: ρ = m/V 2:25
Pressure 3:40
Consider Two Equal Height Cylinders of Water with Different Areas 3:41
Definition and Formula for Pressure: p = F/A 5:20
Pressure at Depth 7:02
Pressure at Depth Overview 7:03
Free Body Diagram for Pressure in a Container of Fluid 8:31
Equations for Pressure at Depth 10:29
Absolute Pressure vs. Gauge Pressure 12:31
Absolute Pressure vs. Gauge Pressure 12:32
Why Does Gauge Pressure Matter? 13:51
Depth, Not Shape or Direction 15:22
Depth, Not Shape or Direction 15:23
Depth = Height 18:27
Depth = Height 18:28
Buoyancy 19:44
Buoyancy and the Buoyant Force 19:45
Archimedes' Principle 21:09
Archimedes' Principle 21:10
Example 1: Rock & Fluid 23:47
Example 2: Pressure of Water at the Top of the Reservoir 28:01
Example 3: Wood & Fluid 31:47
Example 4: Force of Air Inside a Cylinder 36:20
Intro to Temperature & Heat 34:06
Intro 0:00
Absolute Zero 1:50
Absolute Zero 1:51
Kelvin 2:25
Kelvin 2:26
Heat vs. Temperature 4:21
Heat vs. Temperature 4:22
Heating Water 5:32
Heating Water 5:33
Specific Heat 7:44
Specific Heat: Q = cm(∆T) 7:45
Heat Transfer 9:20
Conduction 9:24
Convection 10:26
Example 1: Converting Temperature 13:21
Example 2: Calories 14:54
Example 3: Thermal Energy 19:00
Example 4: Temperature When Mixture Comes to Equilibrium Part 1 20:45
Example 4: Temperature When Mixture Comes to Equilibrium Part 2 24:55
Change Due to Heat 44:03
Intro 0:00
Linear Expansion 1:06
Linear Expansion: ∆L = Lα(∆T) 1:07
Volume Expansion 2:34
Volume Expansion: ∆V = Vβ(∆T) 2:35
Gas Expansion 3:40
Gas Expansion 3:41
The Mole 5:43
Conceptual Example 5:44
The Mole and Avogadro's Number 7:30
Ideal Gas Law 9:22
Ideal Gas Law: pV = nRT 9:23
p = Pressure of the Gas 10:07
V = Volume of the Gas 10:34
n = Number of Moles of Gas 10:44
R = Gas Constant 10:58
T = Temperature 11:58
A Note On Water 12:21
A Note On Water 12:22
Change of Phase 15:55
Change of Phase 15:56
Change of Phase and Pressure 17:31
Phase Diagram 18:41
Heat of Transformation 20:38
Heat of Transformation: Q = Lm 20:39
Example 1: Linear Expansion 22:38
Example 2: Explore Why β = 3α 24:40
Example 3: Ideal Gas Law 31:38
Example 4: Heat of Transformation 38:03
Thermodynamics 27:30
Intro 0:00
First Law of Thermodynamics 1:11
First Law of Thermodynamics 1:12
Engines 2:25
Conceptual Example: Consider a Piston 2:26
Second Law of Thermodynamics 4:17
Second Law of Thermodynamics 4:18
Entropy 6:09
Definition of Entropy 6:10
Conceptual Example of Entropy: Stick of Dynamite 7:00
Order to Disorder 8:22
Order and Disorder in a System 8:23
The Poets Got It Right 10:20
The Poets Got It Right 10:21
Engines in General 11:21
Engines in General 11:22
Efficiency 12:06
Measuring the Efficiency of a System 12:07
Carnot Engine ( A Limit to Efficiency) 13:20
Carnot Engine & Maximum Possible Efficiency 13:21
Example 1: Internal Energy 15:15
Example 2: Efficiency 16:13
Example 3: Second Law of Thermodynamics 17:05
Example 4: Maximum Efficiency 20:10

## Section 8: Electricity

Electric Force & Charge 41:35
Intro 0:00
Charge 1:04
Overview of Charge 1:05
Positive and Negative Charges 1:19
A Simple Model of the Atom 2:47
Protons, Electrons, and Neutrons 2:48
Conservation of Charge 4:47
Conservation of Charge 4:48
Elementary Charge 5:41
Elementary Charge and the Unit Coulomb 5:42
Coulomb's Law 8:29
Coulomb's Law & the Electrostatic Force 8:30
Coulomb's Law Breakdown 9:30
Conductors and Insulators 11:11
Conductors 11:12
Insulators 12:31
Conduction 15:08
Conduction 15:09
Conceptual Examples 15:58
Induction 17:02
Induction Overview 17:01
Conceptual Examples 18:18
Example 1: Electroscope 20:08
Example 2: Positive, Negative, and Net Charge of Iron 22:15
Example 3: Charge and Mass 27:52
Example 4: Two Metal Spheres 31:58
Electric Fields & Potential 34:44
Intro 0:00
Electric Fields 0:53
Electric Fields Overview 0:54
Size of q2 (Second Charge) 1:34
Size of q1 (First Charge) 1:53
Electric Field Strength: Newtons Per Coulomb 2:55
Electric Field Lines 4:19
Electric Field Lines 4:20
Conceptual Example 1 5:17
Conceptual Example 2 6:20
Conceptual Example 3 6:59
Conceptual Example 4 7:28
Why Does It Work? 9:33
Electric Potential Energy 11:40
Electric Potential Energy 11:41
Electric Potential 13:44
Electric Potential 13:45
Difference Between Two States 14:29
Electric Potential is Measured in Volts 15:12
Ground Voltage 16:09
Potential Differences and Reference Voltage 16:10
Ground Voltage 17:20
Electron-volt 19:17
Electron-volt 19:18
Equipotential Surfaces 20:29
Equipotential Surfaces 20:30
Equipotential Lines 21:21
Equipotential Lines 21:22
Example 1: Electric Field 22:40
Example 2: Change in Energy 24:25
Example 3: Constant Electrical Field 27:06
Example 4: Electrical Field and Change in Voltage 29:06
Example 5: Voltage and Energy 32:14
Electric Current 29:12
Intro 0:00
Electric Current 0:31
Electric Current 0:32
Amperes 1:27
Moving Charge 1:52
Conceptual Example: Electric Field and a Conductor 1:53
Voltage 3:26
Resistance 5:05
Given Some Voltage, How Much Current Will Flow? 5:06
Resistance: Definition and Formula 5:40
Resistivity 7:31
Resistivity 7:32
Resistance for a Uniform Object 9:31
Energy and Power 9:55
How Much Energy Does It take to Move These Charges Around? 9:56
What Do We Call Energy Per Unit Time? 11:08
Formulas to Express Electrical Power 11:53
Voltage Source 13:38
Introduction to Voltage Source 13:39
Obtaining a Voltage Source: Generator 15:15
Obtaining a Voltage Source: Battery 16:19
Speed of Electricity 17:17
Speed of Electricity 17:18
Example 1: Electric Current & Moving Charge 19:40
Example 2: Electric Current & Resistance 20:31
Example 3: Resistivity & Resistance 21:56
Example 4: Light Bulb 25:16
Electric Circuits 52:02
Intro 0:00
Electric Circuits 0:51
Current, Voltage, and Circuit 0:52
Resistor 5:05
Definition of Resistor 5:06
Conceptual Example: Lamps 6:18
Other Fundamental Components 7:04
Circuit Diagrams 7:23
Introduction to Circuit Diagrams 7:24
Wire 7:42
Resistor 8:20
Battery 8:45
Power Supply 9:41
Switch 10:02
Wires: Bypass and Connect 10:53
A Special Not in General 12:04
Example: Simple vs. Complex Circuit Diagram 12:45
Kirchoff's Circuit Laws 15:32
Kirchoff's Circuit Law 1: Current Law 15:33
Kirchoff's Circuit Law 1: Visual Example 16:57
Kirchoff's Circuit Law 2: Voltage Law 17:16
Kirchoff's Circuit Law 2: Visual Example 19:23
Resistors in Series 21:48
Resistors in Series 21:49
Resistors in Parallel 23:33
Resistors in Parallel 23:34
Voltmeter and Ammeter 28:35
Voltmeter 28:36
Ammeter 30:05
Direct Current vs. Alternating Current 31:24
Direct Current vs. Alternating Current 31:25
Visual Example: Voltage Graphs 33:29
Example 1: What Voltage is Read by the Voltmeter in This Diagram? 33:57
Example 2: What Current Flows Through the Ammeter When the Switch is Open? 37:42
Example 3: How Much Power is Dissipated by the Highlighted Resistor When the Switch is Open? When Closed? 41:22
Example 4: Design a Hallway Light Switch 45:14

## Section 9: Magnetism

Magnetism 25:47
Intro 0:00
Magnet 1:27
Magnet Has Two Poles 1:28
Magnetic Field 1:47
Always a Dipole, Never a Monopole 2:22
Always a Dipole, Never a Monopole 2:23
Magnetic Fields and Moving Charge 4:01
Magnetic Fields and Moving Charge 4:02
Magnets on an Atomic Level 4:45
Magnets on an Atomic Level 4:46
Evenly Distributed Motions 5:45
Unevenly Distributed Motions 6:22
Current and Magnetic Fields 9:42
Current Flow and Magnetic Field 9:43
Electromagnet 11:35
Electric Motor 13:11
Electric Motor 13:12
Generator 15:38
A Changing Magnetic Field Induces a Current 15:39
Example 1: What Kind of Magnetic Pole must the Earth's Geographic North Pole Be? 19:34
Example 2: Magnetic Field and Generator/Electric Motor 20:56
Example 3: Destroying the Magnetic Properties of a Permanent Magnet 23:08

Duration: 22 hours, 46 minutes

Number of Lessons: 34

This online class is perfect for high school students but also appropriate for college students taking algebra-based physics. This course will leave you with a solid foundation of how things work and also prepare you for calculus based physics.

• Free Sample Lessons
• Closed Captioning (CC)
• Study Guides

Topics Include:

• Math Review
• Kinematics
• Newton’s Laws
• Energy & Work
• Linear Momentum
• Waves & Light
• Thermodynamics
• Electric Force & Charge
• Magnetism

Professor Selhorst-Jones has been teaching over 10+ years and double-majored in Mathematics and Theater at Pomona College, as well as received an M.F.A. in Acting from Harvard University.

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By Angela QianMay 20, 2017
ur a good teach. i understood everything
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Ok thank you!
By Peter KeApril 28, 2016
Thank you!
By Peter KeApril 27, 2016
Ok, thank you so much!
By francisco marreroAugust 19, 2015
Professor, thank you very much for your detailed and helpful reply.  I have not known where to begin, and you have outlined it excellently.  I appreciate it a lot. - Best regards, Francisco

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