(Solved): A sound wave arriving at your ear is transferred to the fluid in the cochlea. If the intensity in t ...

A sound wave arriving at your ear is transferred to the fluid in the cochlea. If the intensity in the fluid is 0.720 times that in air and the frequency is the same as for the wave in air, what will be the ratio of the pressure amplitude of the Wave in air to that in the fluld? Approximate the fluid as having the same values of density and speed of sound as water. Speed of sound in dry air $\left(20.0^{\circ }\mathrm{C},1.00\mathrm{atm}\right)$ is $343\mathrm{m}/5$, density of dry air (at STP) is $1.29{\mathrm{kg}}^3{\mathrm{m}}^3$, density of water is $1000\mathrm{kg}/{\mathrm{m}}^3$, and speed of sound in water is $1493\mathrm{m}/\mathrm{s}$. Required information Akiko rides her bike toward a brick wall with a speed of $7.00\mathrm{m}/\mathrm{s}$ while blowing a whistle that is emitting sound with a frequency of $534.0\mathrm{Hz}$. Speed of sound in air at $20.0^{\circ }\mathrm{C}$ is $343\mathrm{m}/\mathrm{s}$. What is the frequency of the sound that is reflected from the wall as heard by Haruki, who is standing stili? Required information An aluminum rod, $1.00\mathrm{m}$ long, is held lightly in the middle. One end is struck head-on with a rubber mallet so that a longitudinal pulse-a sound wave-travels down the rod. The fundamental frequency of the longitudinal vibration is $2.80\mathrm{kHz}$. Calculate the speed of sound in aluminum from the information given in the problem. $\mathrm{km}/\mathrm{s}$ A geological survey ship mapping the floor of the ocean sends sound pulses down from the surface and measures the time taken for the echo to return. How deep is the ocean at a point where the echo time (down and back) is 9.30 s? The temperature of the seawater is $25.0^{\circ }\mathrm{C}$. Speed of the sound in seawater is $1533\mathrm{m}/\mathrm{s}$ (see table 12.1) Required information A ship mapping the depth of the ocean emits a sound of $46.8\mathrm{kHz}$. The sound travels to the ocean floor and returns 0.640 s later. The speed of sound in sea water is about $1533\mathrm{m}/\mathrm{s}$ (see table 12.1 ). How deep is the water at that location?