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/u/gporafk's posts in /r/askscience

If speed has a universal maximum c velocity, could we use it to get an absolute reference frame?

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[Movement of rigid bodies] Why is it impossible to define a 'rotation vector' that gives us angular velocity when derivated?

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Can solar panels charge from moonlight/street lamps?

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How powerful nuclear bomb could we build?

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Is it possible to reach a completely working utopia?

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Why do we use 50Hz utilty frequency, if that is in the most dangerous range?

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At what altitude can't sound spread anymore?

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If faster objects have larger mass, do they have stronger gravitational field?

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When an electron and an antielectron collide, they parish, and make a photon. Doesn't it violate the law of momentum conservation, because the photon doesn't have mass?

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How come planets have elliptical orbits, if falling objects near earth have parabolic trajectories?

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