the wavelength of the sound emitted by a dog is 0.009 m ; what is the frequency of the whistle ? ( use the formula : V= frequency x wavelength
V= 330m/s
Wavelength= .009m
Frequency= 330/.009 hz
The speed of sound in air varies with temperature. It is 331 m/s at 0 C and 343 m/s at 20 C. The whistle frequency would be 37,000 Hz.
I doubt if the dog emits the sound, as your question implies. It is the dog whistle that makes the sound.
To find the frequency of the whistle, we can use the formula V = frequency x wavelength, where V is the speed of sound.
However, we do not have the value of V given in the question. The speed of sound in air at room temperature and atmospheric pressure is approximately 343 meters per second. So, we will use this value for V.
Let's substitute the known values into the formula and solve for frequency:
343 m/s = frequency x 0.009 m
To find the frequency, we can rearrange the equation:
frequency = V / wavelength
frequency = 343 m/s / 0.009 m
frequency ≈ 38,111 Hz
Therefore, the frequency of the whistle is approximately 38,111 Hz.