14-8 depicts the following scenario. Two people relaxing on a deck listen to a songbird sing. One person, only 1.66 m from the bird, hears the sound with an intensity of 2.86×10−6 W/m^2. A bird-watcher is hoping to add the white-throated sparrow to her "life list" of species. How far could she be from the bird described in example 14-8 and still be able to hear it? Assume no reflections or absorption of the sparrow's sound.

Q: A particular person's eardrum is circular, with a diameter of 9.00 mm. (a)How much sound energy (in…

A: (a) The radius of the eardrum is, r=d2=9×10-3 m2=4.5×10-3 m The area of the circular eardrum is,…

Q: A sound wave arriving at your ear is transferred to the fluid in the cochlea. If the intensity in…

A:

Q: Consider a sound wave moving through the air modeled with the equation s(x, t) = 5.00 nm cos(59.00…

A:

Q: A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies…

A:

Q: Your experiments on a particular insulator indicate that a 20 C the average speed of sound in the…

A: The velocity of an object is defined as the distance covered by that object in unit time. It can be…

Q: A piano string is under a tension of T = 872 N. When struck the wave has a period of t = 0.85 ms and…

A:

Q: Problem 4. At a distance of 3.8 m from a siren, the sound intensity is 0.036 W/m². Assuming that the…

A:

Q: At a rock concert, the sound intensity 1.0 m in front of the bank of loudspeakers is 0.10 W/m2. A…

A:

Q: afacturer: (1) an improved muffler that each frequency band, (2) a reduction in reduce the sound…

A: Given as,

Q: A sound wave traveling in 19 °C air has a sound intensity of 21 × 10-3 W/m2. Part (a) Assuming…

A: a) The intensity of sound wave isI=∆P22ρv          .......(1)where ∆P is the pressure variation of…

Q: at what distance from the factory (in km) is the intensity level of the whistle sound equal to 12…

A: Given, Factory whistle can be heard up to a distance, D=1.1Km=1100m Threshold of human hearing,…

Q: A vacuum cleaner produces sound with a measured sound level of 70.0 dB. (a) What is the intensity of…

A:

Q: Taking the threshold of hearing to be 1.00 × 10-1² w/m², determine the level of sound (in decibels)…

A: Given that, The threshold intensity of sound is, We need to find the level of sound that can be…

Q: Sound waves entering human ear first pass through the auditory canal before reaching the eardrum. If…

A: Length of the auditory canal, l = 2.5 cm=2.5×10-2 m Diameter of the auditory canal, d= 7.00…

Q: passenger is standing on a platform. A train is arriving with speed =100m/s. It whistles at point B…

A: Given: v = 100 m/s fwhistle = 100 Hz a = 330 m/s

Q: A length of piano wire (mass density 5.55 * 10-4 kg/m) is under 185 N of tension. A sinusoidal wave…

A: Given: Mass density μ=5.55×10-4kg/m Tension T= 185N Frequency f=256Hz Power P=5.20W

Q: A microphone receiving a pure sound tone feeds an oscilloscope, producing a wave on its screen. If…

A: Given:  I = 2 x 10-5 W/m2 Amplitude increases by 3 %

Q: Find the range of wavelengths emitted by the bat in meters, by using that the speed of sound is…

A: Given: speed of sound is c=343m/sec  the range of frequencies from 70 to 30KHz.  uppercut =…

Q: One way to monitor global warming is to measure the average temperature of the ocean. Researchers…

A: speed of sound at 4o C = 1480 m/s increase in velocity for every 1oC change in temperature = 4 m/s…

Q: The density of a sample of water is ρ = 998.00 kg/m3 and the bulk modulus is β = 2.15 GPa. What is…

A: density of water is ρ = 998.00 kg/m3  bulk modulus is β = 2.15 GPa

Q: A piano wire has a linear mass density of μ = 4.95 × 10−3 kg/m. Under what tension must the string…

A: mass density, μ = 4.95 × 10−3 kg/m speed, v = 500 m/s

Q: Deep ultrasonic heating is used to promote healing of torn tendons. It is produced by applying…

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Q: Sound is detected when a sound wave causes the eardrum to vibrate. Typically, the diameter of a…

A: Given: Diameter of human eardrum: 8.4 mm The intensity level of given sound wave : P = 20 dB Time…

Q: A guitar string of length L = 0.71 m is oriented along the x-direction and under a tension of T = 92…

A: Write the equation for velocity

Q: A copper wire has a density of 8920 kg per cubic meter, a radius of 1.5mm and an unknown length. The…

A:

Q: A siren on a tall pole radiates sound waves uniformly in all directions. At a distance of 15.0 m…

A: We know that, as we move away from any sound source, its sound intensity will decrease. This implies…

Electromagnetic Waves

Electromagnetic waves are waves that consist of magnetic field and electric field components perpendicular to each other. These field components are also perpendicular to the direction of propagation of the wave.