Speed of Sound at a known temperature and density of air Altitude Temperature Speed of Sound Feet (ft) Meter (m) Celcius (°C) Kelvin (K) mph knots km/h m/s 0 (sea level) 0 (sea level) 15 288 761.1 661 1,225 340.3 5,000 1524 5.1 278 747.9 650 1,204 334.4 10,000 3048 |-4.8 268 734.5 638 1,182 328.4 15,000 4572 |-14.7 258 720.8 626 1,160 322.2 20,000 6096 |-24.6 248 706.9 614 1,138 316.0 25,000 7620 |-34.5 239 692.6 602 1,115 309.6 30,000 9144 -44.4 229 678.1 589 1,091 303.1 35,000 10668 |-56.0 217 660.7 574 1,063 295.4 40,000 12192 |-56.6 216 659.8 573 1,062 294.9 45,000 13716 |-56.6 216 659.8 573 1,062 294.9 50,000 15240 |-56.6 216 659.8 573 1,062 294.9 55,000 16764 |-56.6 216 659.8 573 1,062 294.9 60,000 18288 |-56.6 216 659.8 573 1,062 294.9

Q: The intensity (I) of a source of sound is 10 °Wm . I, = 10 -12 Wm . What is the sound level of 10…

A:

Q: The range of human hearing extends from 20 Hz to 20 kHz.  Find the wavelengths of these extremes, at…

A: We know:

Q: Three identical aircraft produce a total sound level of 1.0×102dB when flying in formation. If each…

A: sound loudness due to three identical aircrafts (β) = 100 dB

Q: A) What is the speed of sound in 115 degree Fahrenheit air? A very hot day to be certain!--. Some…

A:

Q: For an approaching sound source (relative to a stationary observer), the frequency of the sound wave…

A: Required :  Fill in the gaps

Q: A loudspeaker is placed near the open end of a pipe length 87 cm closed at its other end. Calculate…

A:

Q: The frequency of G, on the piano is 196.0 Hz. (a) What is the wavelength (in m) of sound with this…

A: Given data as per question frequency   =196Hz

Q: A stone is dropped from rest into a well. The sound of the splash is heard exactly 3.30 s later.…

A: v=331 m/s+0.61TC=331 m/s+0.6116=340.76 m/s

Q: What are the longest and shortest wavelengths of sound that can be heard by a bat in air where the…

A: Bats use echolocation to navigate and hunt, emitting ultrasonic sounds and then analyzing the echoes…

Q: Find the number of decibels for the power of the sound given. Round to the nearest decibel. A…

A: Intensity of sound due to rocket engine (I) = 2.43×10-5 Wcm2

Q: A sound wave travelling in a dense medium has a frequency of 20 KHz and a wavelength of 40 cm. What…

A: Write the expression for the speed of the waveform. Here, n represents the frequency and λ…

Q: A stone is dropped from rest into a well. The sound of the splash is heard exactly 3.00 s later.…

A: Given:initial velocity of the stone, u = 0 m/stime taken to hear splash after stone is droped, to =…

Q: How long will it take a sound to travel 2300 m in air with a temperature of 42 C?

A: The expression for Velocity relative to speed is, V = 331 + 0.6 T

Q: The intensity of the sound from a certain leaf blower is measured at  25 × 10−2 W/m2.  Find the…

A: The intensity of the sound is I = 25×10-2 W/m2

Q: Two atmospheres made of the same gas gases have the following properties: P1 = 3P2 and 2ρ0(1) =…

A: Relation between pressures, P1 = 3P2 Density relationship, 2ρ0(1) = ρ0(2) Ratio, V2/V1 = ?

Q: Calculate the speed of sound in a string that has a tension of 441 N and a linear mass density of…

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Q: Discuss the effect of density , pressure, temperature on the velocity of longitudinal waves in air.

A: Longitudinal waves are the kind of waves in which particles of wave vibrate parallelly to the…

Q: For transverse waves the oscillation is _____ to the direction of motion.

A: For transverse waves the oscillation is perpendicular to the direction of motion.

Q: If the sound level in a place increased from 50dB to 60dB, by what factor has the actual intensity…

A:

Q: Calculate the frequency (in Hz) of the 2nd overtone emitted by an open  pipe of length 1.5 m. The…

A: Given : An open pipe. Length, L = 1.5m Speed of sound in air, v = 343 m/s

Q: A sound wave of 440 Hz in water has a wavelength of 3.25m. Find the velocity of sound in water.

A: Given the frequency of the wave  f=440 Hz = 440 s-¹ Wavelength is given by λ=3.25 m Let the speed of…

Q: .. A car horn emits a frequency of 400 Hz in 20 °C air, which has a speed of sound of 343 m/s. If…

A: Part 2: Explanation1. The speed of sound relative to the observer is the sum of the speed of sound…

Q: What is the wavelength in air at 22° C of a 440 Hz sound?

A:

Q: What frequency of sound traveling in air at 40 °C has a wavelength of 0.50 m?

A: We have-Wavelength,λ= 0.50 mTemperature, T= 40°CWe know that-vsound in air= 331.4 + 0.6 Tcsubstitute…

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.