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Determining Krypton Concentration is Xenon
Determining Krypton Concentration is Xenon

... In the Millikan experiment there was a high percent difference and error. This probably is the result of the set up we used was very temperate an we constantly needed to adjust the camera and grid. Most problems during the experiment arose from focusing. The grid with the apparatus used was difficul ...
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... around above his head by one student and the speed of bung is increased until the marker is just below tube. Another student times, say, 50 revolutions of the bung. By moving marker the length l of the string can be varied and the relation between l and the angular velocity () obtained. Since T (te ...
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... At maximum displacement, the oscillating object is momentarily A stopped while it changes direction, but the spring restoring force is at a maximum (F = -kx). Momentum is conserved (p = mv). Since the total mass is greater, D then the combined velocity must be less. Total momentum increases, so an e ...
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Anti-gravity

Anti-gravity is an idea of creating a place or object that is free from the force of gravity. It does not refer to the lack of weight under gravity experienced in free fall or orbit, or to balancing the force of gravity with some other force, such as electromagnetism or aerodynamic lift. Anti-gravity is a recurring concept in science fiction, particularly in the context of spacecraft propulsion. An early example is the gravity blocking substance ""Cavorite"" in H. G. Wells' The First Men in the Moon.In Newton's law of universal gravitation, gravity was an external force transmitted by unknown means. In the 20th century, Newton's model was replaced by general relativity where gravity is not a force but the result of the geometry of spacetime. Under general relativity, anti-gravity is impossible except under contrived circumstances. Quantum physicists have postulated the existence of gravitons, a set of massless elementary particles that transmit the force, and the possibility of creating or destroying these is unclear.""Anti-gravity"" is often used colloquially to refer to devices that look as if they reverse gravity even though they operate through other means, such as lifters, which fly in the air by using electromagnetic fields.
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