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(6) given that,
speed of sound=3.3×10⁴cm per second
=3.3×10²m per second
=330m/s
(7)distance fom earth to moon=384400000m
=3.844×10⁸m
note that,
in scientific form of notation exponants are given only to 10 and it's variable is only varies from 0.5 to 5
hope it helps to you☺️
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3.844*10 by 8 is the write ans
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