Table of contents

Skip topic navigation

0. Math Review31m

Math Review
31m

1. Intro to Physics Units1h 29m

Introduction to Units
26m

Unit Conversions
18m

Solving Density Problems
13m

Dimensional Analysis
10m

Counting Significant Figures
5m

Operations with Significant Figures
14m

2. 1D Motion / Kinematics3h 56m

Vectors, Scalars, & Displacement
13m

Average Velocity
32m

Intro to Acceleration
7m

Position-Time Graphs & Velocity
26m

Conceptual Problems with Position-Time Graphs
22m

Velocity-Time Graphs & Acceleration
5m

Calculating Displacement from Velocity-Time Graphs
15m

Conceptual Problems with Velocity-Time Graphs
10m

Calculating Change in Velocity from Acceleration-Time Graphs
10m

Graphing Position, Velocity, and Acceleration Graphs
11m

Kinematics Equations
37m

Vertical Motion and Free Fall
19m

Catch/Overtake Problems
23m

3. Vectors2h 43m

Review of Vectors vs. Scalars
1m

Introduction to Vectors
7m

Adding Vectors Graphically
22m

Vector Composition & Decomposition
11m

Adding Vectors by Components
13m

Trig Review
24m

Unit Vectors
15m

Introduction to Dot Product (Scalar Product)
12m

Calculating Dot Product Using Components
12m

Intro to Cross Product (Vector Product)
23m

Calculating Cross Product Using Components
17m

4. 2D Kinematics1h 42m

Intro to Motion in 2D: Position & Displacement
20m

Velocity in 2D
27m

Acceleration in 2D
12m

Kinematics in 2D
18m

Intro to Relative Velocity
23m

5. Projectile Motion3h 6m

Intro to Projectile Motion: Horizontal Launch
35m

Negative (Downward) Launch
24m

Symmetrical Launch
25m

Projectiles Launched From Moving Vehicles
15m

Special Equations in Symmetrical Launches
16m

Positive (Upward) Launch
50m

Using Equation Substitution
17m

6. Intro to Forces (Dynamics)3h 22m

Newton's First & Second Laws
16m

Types Of Forces & Free Body Diagrams
20m

Forces & Kinematics
12m

Vertical Forces & Acceleration
23m

Vertical Equilibrium & The Normal Force
18m

Forces in 2D
36m

Equilibrium in 2D
24m

Newton's Third Law & Action-Reaction Pairs
11m

Forces in Connected Systems of Objects
38m

7. Friction, Inclines, Systems2h 44m

Inclined Planes
20m

Kinetic Friction
17m

Static Friction
21m

Inclined Planes with Friction
37m

Systems of Objects with Friction
10m

Systems of Objects on Inclined Planes with Friction
19m

Stacked Blocks
16m

Intro to Springs (Hooke's Law)
20m

8. Centripetal Forces & Gravitation7h 26m

Uniform Circular Motion
7m

Period and Frequency in Uniform Circular Motion
20m

Centripetal Forces
15m

Vertical Centripetal Forces
10m

Flat Curves
9m

Banked Curves
10m

Newton's Law of Gravity
30m

Gravitational Forces in 2D
25m

Acceleration Due to Gravity
13m

Satellite Motion: Intro
5m

Satellite Motion: Speed & Period
35m

Geosynchronous Orbits
15m

Overview of Kepler's Laws
5m

Kepler's First Law
11m

Kepler's Third Law
16m

Kepler's Third Law for Elliptical Orbits
15m

Gravitational Potential Energy
21m

Gravitational Potential Energy for Systems of Masses
17m

Escape Velocity
21m

Energy of Circular Orbits
23m

Energy of Elliptical Orbits
36m

Black Holes
16m

Gravitational Force Inside the Earth
13m

Mass Distribution with Calculus
45m

9. Work & Energy1h 59m

Intro to Energy & Kinetic Energy
5m

Intro to Calculating Work
27m

Net Work & Work-Energy Theorem
25m

Work On Inclined Planes
16m

Work By Springs
16m

Work As Area Under F-x Graphs
7m

Power
19m

10. Conservation of Energy2h 54m

Intro to Energy Types
3m

Gravitational Potential Energy
10m

Intro to Conservation of Energy
32m

Energy with Non-Conservative Forces
20m

Springs & Elastic Potential Energy
19m

Solving Projectile Motion Using Energy
13m

Motion Along Curved Paths
4m

Rollercoaster Problems
13m

Pendulum Problems
13m

Energy in Connected Objects (Systems)
24m

Force & Potential Energy
18m

11. Momentum & Impulse3h 40m

Intro to Momentum
11m

Intro to Impulse
14m

Impulse with Variable Forces
12m

Intro to Conservation of Momentum
17m

Push-Away Problems
19m

Types of Collisions
4m

Completely Inelastic Collisions
28m

Adding Mass to a Moving System
8m

Collisions & Motion (Momentum & Energy)
26m

Ballistic Pendulum
14m

Collisions with Springs
13m

Elastic Collisions
24m

How to Identify the Type of Collision
9m

Intro to Center of Mass
15m

12. Rotational Kinematics2h 59m

Rotational Position & Displacement
25m

More Connect Wheels (Bicycles)
29m

Rotational Velocity & Acceleration
20m

Equations of Rotational Motion
20m

Converting Between Linear & Rotational
26m

Types of Acceleration in Rotation
26m

Rolling Motion (Free Wheels)
16m

Intro to Connected Wheels
12m

13. Rotational Inertia & Energy7h 4m

More Conservation of Energy Problems
54m

Conservation of Energy in Rolling Motion
45m

Parallel Axis Theorem
13m

Intro to Moment of Inertia
28m

Moment of Inertia via Integration
18m

Moment of Inertia of Systems
23m

Moment of Inertia & Mass Distribution
10m

Intro to Rotational Kinetic Energy
16m

Energy of Rolling Motion
18m

Types of Motion & Energy
24m

Conservation of Energy with Rotation
35m

Torque with Kinematic Equations
56m

Rotational Dynamics with Two Motions
50m

Rotational Dynamics of Rolling Motion
27m

14. Torque & Rotational Dynamics2h 5m

Torque & Acceleration (Rotational Dynamics)
15m

How to Solve: Energy vs Torque
10m

Torque Due to Weight
23m

Intro to Torque
26m

Net Torque & Sign of Torque
13m

Torque on Discs & Pulleys
35m

15. Rotational Equilibrium3h 39m

Equilibrium with Multiple Objects
30m

Equilibrium with Multiple Supports
15m

Center of Mass & Simple Balance
29m

Equilibrium in 2D - Ladder Problems
40m

Beam / Shelf Against a Wall
53m

More 2D Equilibrium Problems
14m

Review: Center of Mass
14m

Torque & Equilibrium
22m

16. Angular Momentum3h 6m

Opening/Closing Arms on Rotating Stool
18m

Conservation of Angular Momentum
46m

Angular Momentum & Newton's Second Law
10m

Intro to Angular Collisions
15m

Jumping Into/Out of Moving Disc
23m

Spinning on String of Variable Length
20m

Angular Collisions with Linear Motion
8m

Intro to Angular Momentum
15m

Angular Momentum of a Point Mass
21m

Angular Momentum of Objects in Linear Motion
7m

17. Periodic Motion2h 9m

Spring Force (Hooke's Law)
14m

Intro to Simple Harmonic Motion (Horizontal Springs)
30m

Energy in Simple Harmonic Motion
22m

Simple Harmonic Motion of Vertical Springs
20m

Simple Harmonic Motion of Pendulums
25m

Energy in Pendulums
15m

18. Waves & Sound3h 40m

Intro to Waves
11m

Velocity of Transverse Waves
21m

Velocity of Longitudinal Waves
11m

Wave Functions
31m

Phase Constant
14m

Average Power of Waves on Strings
10m

Wave Intensity
19m

Sound Intensity
13m

Wave Interference
8m

Superposition of Wave Functions
3m

Standing Waves
30m

Standing Wave Functions
14m

Standing Sound Waves
12m

Beats
8m

The Doppler Effect
7m

19. Fluid Mechanics4h 27m

Density
29m

Intro to Pressure
1h 10m

Pascal's Law & Hydraulic Lift
28m

Pressure Gauge: Barometer
13m

Pressure Gauge: Manometer
14m

Pressure Gauge: U-shaped Tube
21m

Buoyancy & Buoyant Force
1h 4m

Ideal vs Real Fluids
3m

Fluid Flow & Continuity Equation
21m

20. Heat and Temperature3h 7m

Temperature
16m

Linear Thermal Expansion
14m

Volume Thermal Expansion
14m

Moles and Avogadro's Number
14m

Specific Heat & Temperature Changes
12m

Latent Heat & Phase Changes
16m

Intro to Calorimetry
21m

Calorimetry with Temperature and Phase Changes
15m

Advanced Calorimetry: Equilibrium Temperature with Phase Changes
9m

Phase Diagrams, Triple Points and Critical Points
6m

Heat Transfer
44m

21. Kinetic Theory of Ideal Gases1h 50m

The Ideal Gas Law
32m

Kinetic-Molecular Theory of Gases
1m

Average Kinetic Energy of Gases
10m

Internal Energy of Gases
14m

Root-Mean-Square Velocity of Gases
15m

Mean Free Path of Gases
20m

Speed Distribution of Ideal Gases
15m

22. The First Law of Thermodynamics1h 26m

Heat Equations for Special Processes & Molar Specific Heats
15m

First Law of Thermodynamics
22m

Work Done Through Multiple Processes
16m

Cyclic Thermodynamic Processes
20m

PV Diagrams & Work
12m

23. The Second Law of Thermodynamics3h 11m

Heat Engines and the Second Law of Thermodynamics
31m

Heat Engines & PV Diagrams
18m

The Otto Cycle
28m

The Carnot Cycle
21m

Refrigerators
22m

Entropy and the Second Law of Thermodynamics
31m

Entropy Equations for Special Processes
24m

Statistical Interpretation of Entropy
11m

24. Electric Force & Field; Gauss' Law3h 42m

Electric Charge
15m

Charging Objects
6m

Charging By Induction
3m

Conservation of Charge
5m

Coulomb's Law (Electric Force)
47m

Electric Field
40m

Electric Fields in Capacitors
16m

Electric Field Lines
16m

Dipole Moment
8m

Electric Fields in Conductors
7m

Electric Flux
21m

Gauss' Law
32m

25. Electric Potential1h 51m

Electric Potential Energy
7m

Electric Potential
27m

Work From Electric Force
31m

Relationships Between Force, Field, Energy, Potential
25m

The ElectronVolt
5m

Equipotential Surfaces
13m

26. Capacitors & Dielectrics2h 2m

Capacitors & Capacitance
8m

Parallel Plate Capacitors
19m

Energy Stored by Capacitor
15m

Capacitance Using Calculus
7m

Combining Capacitors in Series & Parallel
15m

Solving Capacitor Circuits
29m

Intro To Dielectrics
18m

How Dielectrics Work
2m

Dielectric Breakdown
4m

27. Resistors & DC Circuits3h 8m

Intro to Current
6m

Resistors and Ohm's Law
14m

Power in Circuits
11m

Microscopic View of Current
8m

Combining Resistors in Series & Parallel
37m

Kirchhoff's Junction Rule
4m

Solving Resistor Circuits
31m

Kirchhoff's Loop Rule
1h 14m

28. Magnetic Fields and Forces2h 23m

Magnets and Magnetic Fields
21m

Summary of Magnetism Problems
9m

Force on Moving Charges & Right Hand Rule
26m

Circular Motion of Charges in Magnetic Fields
11m

Mass Spectrometer
33m

Magnetic Force on Current-Carrying Wire
22m

Force and Torque on Current Loops
17m

29. Sources of Magnetic Field2h 30m

Magnetic Field Produced by Moving Charges
10m

Magnetic Field Produced by Straight Currents
27m

Magnetic Force Between Parallel Currents
12m

Magnetic Force Between Two Moving Charges
9m

Magnetic Field Produced by Loops andSolenoids
42m

Toroidal Solenoids aka Toroids
12m

Biot-Savart Law (Calculus)
18m

Ampere's Law (Calculus)
17m

30. Induction and Inductance3h 38m

Intro to Induction
5m

Magnetic Flux
12m

Faraday's Law
28m

Lenz's Law
22m

Motional EMF
18m

Transformers
8m

Mutual Inductance
24m

Self Inductance
18m

Inductors
7m

LR Circuits
22m

LC Circuits
35m

LRC Circuits
14m

31. Alternating Current2h 37m

Alternating Voltages and Currents
18m

RMS Current and Voltage
9m

Phasors
20m

Resistors in AC Circuits
9m

Phasors for Resistors
7m

Capacitors in AC Circuits
16m

Phasors for Capacitors
8m

Inductors in AC Circuits
13m

Phasors for Inductors
7m

Impedance in AC Circuits
18m

Series LRC Circuits
11m

Resonance in Series LRC Circuits
10m

Power in AC Circuits
5m

32. Electromagnetic Waves2h 14m

Intro to Electromagnetic (EM) Waves
23m

The Electromagnetic Spectrum
7m

Intensity of EM Waves
22m

Wavefunctions of EM Waves
19m

Radiation Pressure
24m

Polarization & Polarization Filters
30m

The Doppler Effect of Light
6m

33. Geometric Optics2h 57m

Ray Nature Of Light
10m

Reflection of Light
9m

Index of Refraction
16m

Refraction of Light & Snell's Law
22m

Total Internal Reflection
5m

Ray Diagrams For Mirrors
35m

Mirror Equation
19m

Refraction At Spherical Surfaces
9m

Ray Diagrams For Lenses
22m

Thin Lens And Lens Maker Equations
24m

34. Wave Optics1h 15m

Diffraction
8m

Diffraction with Huygen's Principle
14m

Young's Double Slit Experiment
24m

Single Slit Diffraction
27m

35. Special Relativity2h 10m

Inertial Reference Frames
14m

Special Vs. Galilean Relativity
17m

Consequences of Relativity
52m

Lorentz Transformations
45m

32. Electromagnetic Waves

Intro to Electromagnetic (EM) Waves

Physics

32. Electromagnetic Waves

Intro to Electromagnetic (EM) Waves

Previous problemNext problem

Struggling with Physics?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

In introductory electromagnetism, what is the physical source of an electromagnetic wave in free space?

Gravitational attraction between two masses

Accelerating electric charges (time-varying currents) that produce changing electric and magnetic fields

A uniform, constant magnetic field

Static electric charges that remain at rest

Previous problemNext problem

5:22m

Watch next

Master Introduction to Electromagnetic (EM) Waves with a bite sized video explanation from Patrick

Start learning

Intro to Electromagnetic (EM) Waves practice set

Problem sets built by lead tutors

Expert video explanations

Go to Practice

Download the Mobile app

Accessibility

Privacy

Do not sell my personal information