Waves on Strings (Levels: Intro, APB)

This podcast explains standing waves on strings, including an explanation for how to calculate which frequencies of vibration will 'work' to cause a certain string to resonate at all of its different harmonic frequencies.

Static Equilibrium (Levels: Intro, APB, APC)

This podcast introduces the idea of static equilibrium, once students are already familiar with torque concepts.

Review Blast: Energy Conservation (Levels: Intro, APB, APC)

This podcast is a very quick review of how to use energy-conservation ideas to solve motion problems where no friction is involved, and also what extra thinking to use when friction is involved.

Work, Energy, & Momentum Conceptual Questions (Intro, APB, APC)

This podcast is intended to review some conceptual ideas related to work, energy, and momentum. It just consists of 8 conceptual questions, with answers discussed.

Review Blast: Projectiles (Levels: Intro, APB, APC)

This podcast is a very quick review of projectile ideas, including the differences between x- and y- components of motion, how to solve problems when projectiles are launched horizontally, and what additional thinking is involved if a projectile is launched at an initial angle.

Intro to Vector Addition (Levels: Intro, APB, APC)

This podcast introduces you to how to add vectors graphically, and also how to use basic trig to solve for resultants and vector components. (Only deals with parallel and perpendicular pairs of vectors.)

Displacement, Velocity, & Acceleration Concepts (Levels: Intro, APB, APC)

This podcast introduces concepts of displacement, velocity, and acceleration. Basic calculations are discussed, as well as the meanings of positive and negative values for those three quantities in straight-line motion situations.

Velocity-Time Graphs (Levels: Intro, APB, APC)

This podcast discusses how to represent different motions on velocity-time graphs, including the meaning of slope and area these graphs.

Position-Time Graphs (Levels: Intro, APB, APC)

This podcast discusses how different motions are represented on graphs of position versus time, with a special emphasis on the meaning of slope for these graphs.

Review Blast: Connected Objects (Levels: Intro, APB, APC)

This podcast is a very quick review of strategies to use when solving force problems involving multiple objects connected by rope or string.

Review Blast: 2nd Law Problems (Levels: Intro, APB, APC)

This podcast is a very quick review of how to use 2nd Law and Equilibrium ideas, along with force-component and friction ideas, when solving force problems.

Review Blast: Curved Mirrors (Levels: Intro, APB)

This podcast is a very quick review of curved mirrors, including how to draw ray diagrams, what types of images are formed by different curved mirror situations, and how to perform calculations related to curved mirror image formation.

Review Blast: Induced emf (Levels: Intro, APB, APC)

This podcast is a very quick review of Faraday's law of induction, discussing the meaning and calculation of magnetic flux, and the various ways in which a change in flux can happen to lead to induced emf. An added 2 minutes at the end of this podcast reviews how calculations are different in a calculus-based application of Faraday's law.

Review Blast: Magnetic Field & Forces (Levels: Intro, APB, APC)

This podcast is a very quick review of how to perform several different calculations related to magnetic field. (It does NOT review directional aspects of magnetic forces, such as the right-hand rule.) Long straight current-carrying wires are discussed, from the perspective of B-fields they create and how they are affected by external B-fields. The effects of a B-field on a moving charge's motion are also reviewed.

Review Blast: Series & Parallel Circuits (Levels: Intro, APB, APC)

This podcast is a very quick review of the differences between series and parallel circuits in terms of the way current flows, and in terms of the equivalent resistance of the circuit.

Review Blast: Basic Electricity Ideas (Levels: Intro, APB, APC)

This podcast is a very quick review of the meanings of and relationships between basic electrical quantities (current, voltage, resistance, and power), and also a very quick review of the factors about a wire that affect its resistance.

Review Blast: Electric Forces (Levels: Intro, APB, APC)

This podcast is a very quick review of Coulomb's Law and how to use it to solve problems involving multiple electric force vectors.

Electric Force Problems (Levels: Intro, APB, APC)

This podcast is a review of how to use vector addition ideas, along with Coulomb's law, to find the net force acting on a charge when it is pushed/pulled by multiple electric forces.

2nd Law Problems with Connected Objects (Levels: Intro, APB, APC)

This podcast describes strategies for solving problems involving connected objects, through working two examples of this type of problem.

2nd Law Problems with Multiple Forces (Levels: Intro, APB, APC)

This podcast provides extra practice with 'easy' one-dimensional equilibrium problems, and also with problems using Newton's 2nd Law when multiple forces are involved.