🧱=✨
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#e=mc2
#einstein
#relativity
#equivalence principle
#potential energy
#stored energy
⚖️🚀=🌍⬇️
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#equivalence principle
#acceleration
#gravity
#freefall
#inertial frame
#general covariance
#e=mc2 #einstein #relativity #equivalence principle #potential energy #stored energy