Please help me with this! I got D for question 6 but I really need help with the rest.
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6. A violinist is tuning her instrument to concert A (440 Hz). She plays the note while listening toan electronically generated tone of exactly that frequency and hears a beat of frequency 3 Hz,which increases to 4 Hz when she tightens her violin string slightly. To get her violin perfectlytuned to concert A, should she tighten or loosen her string from what it was when she heardthe 3-Hz beat? The speed of sound is 340 m/sec.Oraise the frequency by tightening her stringOlower the frequency by tightening her stringOraise the frequency by loosening her stringwer the frequency by loosening her7. For a home sound system, two small speakers are located so that one is 45 cm closer to thelistener than the other. For what value of the fundamental frequency of audible sound willthese speakers produce constructive interference at the listener? The speed of sound is 340m/sec.764 Hz500 Hz900 Hz387 Hz8. A violinist is tuning her instrument to concert A (440 Hz). She plays the note while listening toan electronically generated tone of exactly that frequency and hears a beat of frequency 3 Hz.Which is the frequency of the note she is playing on the guitar? The speed of sound is 340m/sec.437 Hz430 Hz433 HzQ439 Hz
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