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 | |
| |
What About Acceleration? |
3:22 | |
| |
| 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 | |
| |
| Long Radio Waves & Radio Waves |
7:06 | |
| |
| 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 | |
| |
Wait! What About Pressure? |
22:30 | |
| |
| Wait! What About Pressure? |
22:31 | |
| |
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 | |
| |
| Radiation |
11:35 | |
| |
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 | |
| |
Faraday Cage |
8:47 | |
| |
| Introduction to Faraday Cage |
8:48 | |
| |
| 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 | |