Category Archives: Unit 3

Veritasium – Why Gravity is NOT a Force

The General Theory of Relativity tells us gravity is not a force, gravitational fields don’t exist. Objects tend to move on straight paths through curved spacetime.

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Fire in ZERO-G!!

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Electroboom – Why Use AC Instead of DC at Home??

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Electroboom – Brushed DC Motors and How to Drive Them

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Three Right Hand Rules of Electromagnetism – Magnetic Force

Teaching electricity and magnetism is complicated by the challenge that the magnetic forces are perpendicular to the motion of the particles and currents.  This requires a three-dimensional perspective which can introduce a variable of a “wrong” direction.  To prevent errors, … Continue reading

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Charges & fields observations

https://phet.colorado.edu/sims/html/charges-and-fields/latest/charges-and-fields_en.html This great learning object from PhET is great tool for discussion in the Physics classroom, as well as a powerful simulation of actual values. Here are three interesting screen shots that can be used as basis for discussions. This … Continue reading

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Professor Dave – Electric Charge and Electric Fields

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Veritasium – Why Are Astronauts Weightless?

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How Do Satellites Get & Stay in Orbit?

SciShow Space takes you into Low Earth Orbit to explain how artificial satellites get up there and stay there — at least for a while.

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PhET – Charges and Fields

Arrange positive and negative charges in space and view the resulting electric field and electrostatic potential. Plot equipotential lines and discover their relationship to the electric field. Create models of dipoles, capacitors, and more! (Choose the fullscreen option down the … Continue reading

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