Friday, November 16, 2012

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.
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Static Equilibrium (Levels: Intro, APB, APC)

This podcast introduces the idea of static equilibrium, once students are already familiar with torque concepts.
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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.
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Thursday, November 15, 2012

Forces During Rolling (Level: APC)

This podcast explains how to examine forces and torques while an object is rolling.
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Torque & Newton's 2nd Law for Rotation (Level: APC)

This podcast explains what torque is, and how to calculate it.  Newton's 2nd Law is also revisited, from a rotational perspective.
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Friday, January 20, 2012

Review Blast: Gauss' Law (Level: APC)

This podcast is a quick review of Gauss' Law, including conductors in electrostatic equilibrium, E-field due to spherical conductors & non-conductors, E-field due to sheets of charge, and E-field due to lines of charge.



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