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Roland Gesthuizen

Mechanical Advantage - Pulleys - YouTube - 1 views

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    "This video uses working simple machines to demonstrate how to calculate mechanical advantage. Suitable for any school program involving simple machines. Demonstrates pulley systems including a chain block."
Amy Roediger

A Mole of Moles - 12 views

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    Here is a ROUGH "calculation" of what a mole of moles would be like.
Roland Gesthuizen

▶ Speed Formula - YouTube - 6 views

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    "In this video, I show how to find the speed of a moving object, using distance and time. I've included one example to show how it works. Thanks. "
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