Simple Atwood Machine, include Apparatus and 2 pulleys connected by a rod, 1.75inch plastic pulleys connected to a 3inch rod, Overall length is 8.25inch, Two pulleys are connected by a metal rod.
Racing Rings consists of three rods one each of copper, aluminum and PVC, Ring magnet is dropped down the PVC rod, it falls unobstructed, Two metal rods create an induced magnetic field to that adds resistance to the rings travel, metals are different, they fall at different rates
Mystery Density Activity Set with wooden holder, which allows for efficient storage and easy access, Set of 12 bars of different length but the same diameter
Air core solenoid, coils wound on a plastic tube with approximately 575 turns of copper wire, can carry a current of 5A continuously or 10A intermittently.
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