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# Posts tagged energy

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3 posts
28%
+0 −3

Say we have a four underwater components tidal power / hydro power system. Component A. A propeller would always orient along the same direction regardless the direction of the flow. This is th...

0 answers  ·  posted 1y ago by HolyDamn2.0‭  ·  edited 1y ago by HolyDamn2.0‭

50%
+1 −1

Which one is correct? $$E=mc^2$$ or $$E^2=(mc^2)^2+(pc)^2$$ I mostly seen $$E=mc^2$$ from my childhood, and when I was learning problem solving in relativistic mechanics I had seen E^2=(mc^2)^2...

1 answer  ·  posted 2y ago by deleted user  ·  edited 2y ago by deleted user

71%
+3 −0

Momentum is proportional to an object's velocity, and kinetic energy is proportional to the square of its velocity $\dfrac{mv^2}{2}$. It's pretty intuitive that if object B is going twice as fast a...

3 answers  ·  posted 2y ago by gmcgath‭  ·  last activity 2y ago by celtschk‭