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| what will drop faster a 1kg weight of metal or a 1kg weight of paper |
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Definition
| the metal because the paper has more air risisatnce |
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| it is build when an object swings or spins |
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| how many colours can white light be split into |
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| how do dolphins here each other from long distances |
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| what do we measure sound in |
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| what kind of lever is a seesaw |
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| what kind of lever is a weelbarrow |
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