Pulley, Single, 48mm

A spring scale measures weight or force when an object is hung from its hook.

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This kit contains over 30 items for the experiments in the Building Blocks of Science Book 3.

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Two-ounce capacity with 30 mm stem, 6 mm-diameter stem opening. Use 11 cm filter paper.

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This economy ramp for inclined plane studies is 22" long, 5" wide, and constructed of wood.

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This set of four mini pulleys allows you to experiment with motorized cars and equipment of your own design.

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This 38mm plastic pulley is mounted on a rod.

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This hands-on kit provides the materials to build and experiment with a balloon racer and a rubber band racer.

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This pulley is constructed with two low-friction plastic wheels (48mm diameter), a steel housing, and hooks on both ends.

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Magnesium hydroxide occurs naturally as the mineral brucite and is commonly found in antacids and laxatives. This 30 g bottle is reagent grade magnesium hydroxide powder; see the chart below to learn more about this chemical!

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If you're happy & you know it, build a molecule! This molecular modeling system embraces a revolutionary approach to teaching chemistry, taking students on a unique chemistry adventure. Build tens of thousands of molecules!

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