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.

Intro to Sound Waves (Levels: Intro, APB)

This podcast describes several sound wave properties, and introduces the sound wave phenomena of Doppler Effect and Beat Frequency. Simple calculations are also briefly discussed.

Thermal Conduction Problems (Level: APB)

This podcast introduces the formula for calculating rate of heat transfer through conduction, with an example problem to help demonstrate how the formula is used.

Heat as Energy Transfer (Level: APB)

This podcast explains the definition of heat, and how it differs from internal energy. It also explains conduction, convection, and radiation as the three methods of heat transfer.

Thermal Expansion (Level: APB)

This podcast discusses calculations for the linear and volume expansion of objects when heated.

Energy in Simple Harmonic Motion (Levels: APB, APC)

This podcast explains how to think about the energy of a simple harmonic oscillator (specifically a mass-spring system), and also how to solve related problems.

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: PV Diagrams (Level: APB)

This podcast is a very quick review of how to use PV (pressure-volume) diagrams to find temperature at a state, work done during a process or cycle, and change in internal energy during a process or cycle.

Review Blast: 1st Law of Thermodynamics (Level: APB)

This podcast is a very quick review of heat and work as ways to transfer energy into or out of a system, along with rules for when heat and work should be treated as positives or negatives when problem-solving.

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: Parallel-Plate Capacitors (Levels: APB, APC)

The podcast is a very quick review of the meaning of capacitance, the factors that affect the capacitance of a parallel-plate capacitor, and rules for capacitors in series and parallel.

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.