What must the intensity level of a 100 Hz tone be so that it sounds as loud as a 1000 Hz tone at 65 dB? A 100 Hz tone at loudness 40 phons is played simultaneously with a 1000 Hz tone at intensity 40 dB. What is the intensity in W/m^2 of the combined sound?  Answer all part please it is one question

A violin is tuned by adjusting the tension in the strings. Brian’s A string is tuned to a slightly lower frequency than Jennifer’s, which is correctly tuned to 441.0 Hz. What is the frequency of Brian’s string if beats of 1.00 Hz are heard when the two bow the strings together?

A tuning fork with frequency 457 Hz and a tuning fork with frequency 466 Hz are struck simultaneously. (a) What average frequency will you hear? Number Hz (b) What will the beat frequency be? Number Hz

The speed of sound in air is 340 m/s. what is the wavelength of a soundwave that has a frequency of 630 Hz?   Can you Break down equation steps please so I can understand this better

A pipe closed at one end has a first overtone of 489 Hz. What is the second overtone in Hz?

Two speakers are placed next to one another, D = 2.45 meters apart. They both emit a singlenote, A, which has a frequency of 560 Hz. A person stands directly in line with the two speakers, asshown. What is the minimum distance, d, away from the speaker on his left that he should stand sothat will he will no longer hear the note?

Using the sound level versus frequency plot with equal-loudness curves shown below, calculate the intensity in W/m2 for the 10,000-Hz sound having a loudness of 80 phons. (Use your estimate)

The intensity of a sound is 400 W/m2 If the intesity level of sound decreased by 10 decibels, what is the new observed intensity?

Tovi is playing a flute and Dawn is playing a violin. At the beginning of the performance, they tuned their instruments by ear, so the difference between the fundamental frequencies of the A notes played on each instrument was less than 1 HzHz. At the end of the performance, they measured the A note fundamental frequencies of their instruments using a device that measures sound frequency with uncertainty 0.05 HzHz. Dawn's A was 441.8 HzHz and Tovi's was 439.3 HzHz. What is the beat frequency heard when Dawn and Tovi simultaneously play the A note at the end of the performance?