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Michael

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118
Why do same/opposite electric charges repel/attract each other, respectively?
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92
Does someone falling into a black hole see the end of the universe?
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86
Is it really possible to break the speed of light by flicking your wrist with a laser pointer?
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50
How can you weigh your own head in an accurate way?
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41
Do glass panes become thicker at the bottom over time?
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33
Why are expressions such as $\operatorname{ln}T$ used in thermodynamics where $T$ is not dimensionless?
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27
Charge conjugation in Dirac equation
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26
What would be the effects if Jupiter was to blow up?
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25
Mixing of quarks, neutrinos... and leptons?
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24
How long until we fall into the Sun?
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24
How can neutrinos "beat light"?
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22
Dirac equation in curved space-time
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21
Einstein gravity versus Newton's gravity
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20
Origin of electric charge
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19
Do photons lose energy while travelling through space? Or why are planets closer to the sun warmer?
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19
Can electrons move through vacuum?
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18
Why is the velocity on the top of a wheel twice the velocity of its axle?
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17
What is meant by Vacuum?
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16
Can someone please derive $T=2\pi\sqrt{l/g}$ or prove it without using calculus?
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15
How is quantum mechanics compatible with the speed of light limit?
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15
Where does the extra force generated by a lever come from?
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15
How do you tell if a metric is curved?
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14
What is the highest speed time dilation has been tested?
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13
Can you lift a basket up while standing inside it?
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13
What is $\Delta t$ in the time-energy uncertainty principle?
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12
Is propagation of uncertainties linear?
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12
Why do we only have complete particle generations?
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12
Solving the diffusion equation
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12
Entropy and Crystal Growth
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12
Does anybody know of any good sources that explain (generically) how we form Lagrangians/Actions/Superpotentials for different field content?
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