onsidel the igure below I-1m r-2m Indicate over how many squares the sound waves would spread for r- 7 m. squares The sound intensity would decrease to what fraction in value? Need Heln? Read It

he transverse displacement of a stretched string from equilibrium as a function of time and position is given by: %30.13 cos(9 x + 27 t). x and y are in m; t is in s. False: The wave moves in the positive x direction. Less than: The speed of the wave is ..... 4 m/s. Less than: The wavelength is ..... 1 m. Greater than: The period is..... 0.1 seconds. You are correct. Your receipt no. is 160-3132 Calculate the average power transmitted by the string. Data: mass of a 207 m long piece of the string is 2.59 kg. Previous Tries Submit Answer Tries 0/12 Post Discussion

What is the intensity in watts per meter squared of 81.0-dB sound? (You do not need to enter any units.) |W/m²

Some cameras determine the distance to the subject by sending out a sound wave and measuring the time needed for the echo to return to the camera. a) Draw a sketch of the scenario and b) Determine how lonawould it take (to the nearest thousandth of a second) for the sound wave to return to the camera if the subject were 5 m away given the speed of sound was 340 m/s.