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CHAPTER 15 Sound
13. Sound Properties What physical charac-teristic of a sound wave should be changed to change the pitch of the sound? To change the loudness? frequency; amplitude 14. Decibel Scale How much greater is the sound pressure level of a typical rock band’s music (110 dB) than a normal conversation (50 dB)? The sound pressure level increases by
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CHAPTER 4 Forces in One Dimension - Mr. Nguyen's Website
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nguyenmapleleaf.weebly.comthe angles are equal, the horizontal forces will be equal and opposite and cancel out.The magnitude of this vertical force is F combined! F rope1 on swing cos ! " F rope2 on swing cos !! 2F rope2 on swing cos !! (2)(2.28 N)(cos 13.0°)! 4.44 N upward 9. Could a vector ever be shorter than one of its components? Equal in length to one of its ...
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