(a) A sonar echo returns to a submarine 3.20 s after being emitted. What is the distance to the object creating the echo? (Assume that the submarine is in the ocean, not in fresh water.)  in m (b) (Question be is asked as an image, Please look at the image) (c) What is the intensity in watts per meter squared of 89.2 dB sound?  in w/m^2

an airfilled, acoustic interferometer, used to demonstrate the interference of sound waves. Sound source S is an oscillating diaphragm; D is a sound detector, such as the ear or a microphone. Path SBD can be varied in length, but path SAD is fixed. At D, the sound wave coming along path SBD interferes with that coming along path SAD. In one demonstration, the sound intensity at D has a minimum value of 100 units at one position of the movable arm and continuously climbs to a maximum value of 900 units when that arm is shifted by 1.65 cm. Find (a) the frequency of the sound emitted by the source and (b) the ratio of the amplitude at D of the SAD wave to that of the SBD wave. (c) How can it happen that these waves have different amplitudes, considering that they originate at the same source?

Note: use of chat gpt is strictly prohibited.

(a) If the sound intensity of a person’s whisper if 10-11 W/m2 , what would be the level of intensity due to that whisper? (b) If the person now speaks at an intensity that is 100 times the initial whisper, what would be their current sound intensity level

Use the data in Table 3 to make this plot. That is plot I, on the -axis vs. (1/d^2), on the x-axis. Then draw a best fit line throught the data points.

The threshold of hearing is defined as the minimum discernible intensity of the sound. It is approximately 10^−12 W/m^2. Find the distance ddd from the car at which the sound from the stereo can still be discerned. Assume that the windows are rolled down and that each speaker actually produces 0.06 W of sound, as suggested in the last follow-up comment.

Loudness (L), in decibles (dB), of a sound of intensity I is defined to be L=10log( I/I0), where I0=10-12(W/M2) (watts per meter square) is the minimum intensity detectable by the human ear. A.) Find the loudness L, in decibles (dB), of a trombone given the intensity is 1010I0 B.) Find the intensity of a rock concert whose loudness is 115 decibles. C.) What is the NIOSH recommended Exposure Limit (REL) given in dB based on exposures at work 5 days per week?

Imagine the  time delay between the transmission and the arrival of the reflected wave of an ultrasound signal traveling through a region of someone's fattissue was 0.15 ms. Assume that the speed of sound through human tissues is 1540 m/s. then at what depht in cm the reflection ocurs?

A fish finder uses a sonar device that sends 20,000-Hz sound pulses downward from the bottom of the boat, and then detects echoes.Part AIf the maximum depth for which it is designed to work is 200 m , what is the minimum time between pulses (in fresh water)?

One cue your hearing system uses to localize a sound (i.e., to tell where a sound is coming from) is the slight difference in the arrival times of the sound at your ears. Your ears are spaced approximately 20 cm apart. Consider a sound source 5.0 m from the center of your head along a line 45∘ to your right. What is the difference in arrival times? Give your answer in microseconds. Hint: You are looking for the difference between two numbers that are nearly the same. What does this near equality imply about the necessary precision during intermediate stages of the calculation?