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Physics
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DavePhD
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65
Can the sun cast a shadow?
Jun 6, 2014
56
Why can't we see gases?
May 5, 2014
40
Why does a water drop on a hot plate at 150°C evaporate faster than on a plate at 200°C?
May 10, 2014
34
Homemade salad dressing separates into layers after it sits for a while. Why doesn't this violate the 2nd law of thermodynamics?
May 9, 2014
26
Why doesn't dark matter affect planetary motion?
Apr 10, 2014
26
When photons reach us, what exactly is happening to us and to that photon?
Apr 21, 2014
22
Which experiment gave scientists reason to believe nuclear fission/fusion produced energy?
May 16, 2014
20
If I'm floating in space and I turn on a flashlight, will I accelerate?
May 15, 2014
20
If I were standing on the surface of the sun, how far could I see?
Apr 29, 2014
19
Why change in internal energy is zero in isothermal process?
May 20, 2014
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Let's not have posts look like revision histories
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248
Does the President of the United States have the ability to deploy nuclear weapons at will?
185
Is eating processed meat as bad as smoking for causing cancer?
168
Was pink a boy color and blue a girl color prior to the 20th century?
165
When did people decide that all caps means the writer is shouting?
144
Was there violence on both sides in Charlottesville?