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November 22, 2014

Posts by kim..need help


Total # Posts: 2

physics
The frequency of an ambulance's siren is 700 Hz. If a pedestrian on the side of the road hears the siren at 756 Hz, approximately how fast and in what direction is the ambulance moving? a- There is not enough information b- 25 km/h, away from the pedestrian c- 90 km/h, ...
January 31, 2011

physics
The lowest note of a flute is C4 with a frequency of 262 Hz. If one of the ends of the flute is now closed, the new lowest frequency will be ...
January 31, 2011

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