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Rvfm guinea amp feather apparatus
rvfm guinea amp feather apparatus
Rvfm guinea amp feather apparatus
Guinea and feather apparatus rvfm 52 2679 this apparatus can be used to demonstrate that in a vacuum bodies of different density or mass fall at the same speed it consists of a tube fitted with rubber stoppers and a 8mm hose for connection to a vacuum pump rvfm guinea feather apparatus

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