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Economist
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21:44
-4
Economist
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21:43
+14
PhyllisS
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21:36
+9
PhyllisS
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21:36
-9
PhyllisS
Created page with 'The equivalence principle is a theory proposed by Einstein. It states the force felt by someone standing in a gravitational field is the same as the pseudo-force felt by someone ...'
21:34
+396