Physics Forums - The Fusion of Science and Community

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    1. General Physics

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      Latest: Falling objects: Tennis ball vs. feather. Bailey, Jul 27, 2015 at 10:37 PM
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      Latest: Work on the Entire System in Thermodynamics 0pt618, Jul 27, 2015 at 10:14 PM
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    4. Special and General Relativity

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      Latest: Small Space Hadron Collider? mfb, Jul 27, 2015 at 11:11 AM
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      Latest: My Superparticle Bet with Frank Wilczek - Comments atyy, Jul 27, 2015 at 9:56 PM
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    2. Cosmology

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      Latest: How do we know the universe is infinite? Chalnoth, Jul 27, 2015 at 10:22 PM
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      Latest: Ring nebula photo Borg, Jul 19, 2015
    1. General Math

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      Latest: Question about dividing this fraction Mentallic, Jul 27, 2015 at 10:11 PM
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      Latest: Limit practice websites? tommyxu3, Jul 27, 2015 at 7:43 PM
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    1. General Engineering

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      Latest: Fuel tube thermal runaway Hiddencamper, Jul 27, 2015 at 2:59 PM
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      Latest: Big quake coming in NOW davenn, Jul 26, 2015 at 8:04 PM
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