practicalphysics.org

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• 184Cosmology
• 188Demonstration
• 251Physics
• 635Micro science
• 1089Chemistry

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Significant concepts: model of the atom, learning, alpha particle, molecule in a gas, teach note, time interval, radioactive material, compensate for friction, class practical, procedure a set, free fall, constant force, decay and half life, experiment collection, multiflash photography.

982723 distinct domains have been ranked in 2890 public topics.

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