Please answer any of these thanks !

1). The equation is: (speed) = (frequency) x (wavelength)
Speed = (256 Hz) x (1.3 m) = 332.8 meters per second
2). If the instrument is played louder, the amplitude of the waves increases. On the oscilloscope, they would appear larger from top to bottom, but the horizontal size of each wave doesn't change.
If the instrument is played at a higher pitch, then the waves become shorter, because 'pitch' is directly related to the frequency of the waves, and higher pitch means higher frequency and more waves in any period of time.
If the instrument plays louder and at higher pitch, the waves on the scope become taller and there are more of them across the screen.
3). The equation is: Frequency = (speed) / (wavelength) (Notice that this is exactly the same as the equation up above in question #1, only with each side of that one divided by 'wavelength'.)
Frequency = 300,000,000 meters per second / 1,500 meters = 200,000 per second.
That's ' 200 k Hz ' .
Note: I didn't think anybody broadcasts at 200 kHz, so I looked up BBC Radio 4 on-line, and I was surprised. They broadcast on several different frequencies, and one of them is 198 kHz !

Answered by AL2006 | 2024-06-10

The relationship between speed, frequency, and wavelength can be expressed with the equation Speed = Frequency x Wavelength. A higher pitch increases frequency and shortens the wavelength, while a louder sound increases amplitude. An example calculation shows that with a speed of 300,000,000 m/s and a wavelength of 1,500 m, the frequency is 200 kHz.
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Answered by AL2006 | 2025-02-11