Q10) The C string on a cello is tuned to produce a fundamental frequency of 65.4 Hz. Typically, the vibrating portion of
Posted: Mon May 16, 2022 4:23 pm
Q10) The C string on a cello is tuned to produce a fundamental frequency of 65.4 Hz. Typically, the vibrating portion of the string is 69 cm long, but a cellist can press the string against the finger board to reduce its vibrating length and produce higher notes. Where should a cellist position their finger to produce an F# (92.5 Hz)? A 11.4 cm from the end of the string C. 20.2 cm from the end of the string B. 16.3 cm from the end of the string D. 25.7 cm from the end of the string Q11) A toddler discovers that an empty 2 L soda bottle with a length of 30 cm makes an excellent musical instrument. What note do they hear when they blow air across its open end? Assume the speed of sound in air is 343 m/s. A 1144 Hz C. 143 Hz B. 572 Hz D. 286 HZ Q12) An orchestra conductor can easily be subjected to 110 dB during a performance. To protect their hearing, one conductor wears earplugs that are rated to reduce noise levels by 40 dB. By what factor does the intensity of sound reaching their eardrums drop?