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### Other People Who Read Waves and optics : Snell's Law Example 1 Also Read • ### Electricity and magnetism : Circuits (part 4)

##### By: Sal Khan

A hairy resistance problem

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Thermodynamics : Empirical and Molecular Formulas from Stoichiometry

##### By: Sal Khan

Empirical and Molecular Formulas from Stoichiometry

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Fluids : Fluids (part 12)

##### By: Sal Khan

Complete example of a Bernoulli's Equation exercise.

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Waves and optics : Specular and Diffuse Reflection 2

##### By: Sal Khan

Specular and Diffuse Reflection 2

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Torque, moments and angular momentum : Center of Mass

##### By: Sal Khan

Introduction to the center of mass

Thinking about making things rotate. Center of mass, torque, moments and angular velocity.

• ### Thermodynamics : More on Entropy

##### By: Sal Khan

More clarification as to what entropy is and what entropy is not.

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Waves and optics : Concave Lenses

##### By: Sal Khan

Concave Lenses

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Thermodynamics : A look at a seductive but wrong Gibbs/Spontaneity...

##### By: Sal Khan

A look at why the proof of the relation between changes in Gibbs Free Energy and Spontaneity is wrong in many textbooks.

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Electricity and magnetism : Magnetism 7

##### By: Sal Khan

The magnetic force that two current-carrying wires exert on each other.

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Waves and optics : Parabolic Mirrors and Real Images

##### By: Sal Khan

Parabolic Mirrors and Real Images

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Waves and optics : Introduction to Waves

##### By: Sal Khan

Introduction to transverse and longitudinal waves

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Electricity and magnetism : Cross Product and Torque

##### By: Sal Khan

The cross product and the direction of torque.

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Electricity and magnetism : Cross Product 2

##### By: Sal Khan

A little more intuition on the cross product.

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Waves and optics : Convex Lenses

##### By: Sal Khan

Convex Lenses

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Electricity and magnetism : Electric Potential Energy

##### By: Sal Khan

Introduction to electric potential

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Waves and optics : Refraction in Water

##### By: Sal Khan

Refraction in Water

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Thermodynamics : Heat of Formation

##### By: Sal Khan

Standard heat of formation or standard enthalpy change of formation.

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Electricity and magnetism : Magnetism 8

##### By: Sal Khan

More on the forces exerted by 2 current carrying wires on each other.

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Electricity and magnetism : Magnetism 5

##### By: Sal Khan

Magnetic force on a wire carrying current.

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

• ### Thermodynamics : Work from Expansion

##### By: Sal Khan

How a system can do work by expanding

Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary. 