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A man travels 20 km on foot at 5kmph and onther 10km by bus at 20kmph what is the average speed |
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Answer» Further, space is a vacuum, meaning that sound cannot carry because molecules are not close ENOUGH together to transmit sound between them. That's not to say that space is empty, however. GAS, dust and other bits of MATTER float around "emptier" areas of the universe, while more crowded regions can host planets, stars and galaxies. |
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