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3 years ago

A wave with a speed of 9 m/s and a frequency of 0.5 Hz has a λ of what?

Physics

1 answer:

patriot [66]3 years ago

6 0

Wave speed = (wavelength) x (frequency)

Wavelength = (wave speed) / (frequency)

Wavelength = (9 m/s) / (0.5 Hz)

<em>Wavelength = 18 m</em>

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The tension is $T = 4326.7 \ N$

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From the question we are told that

The total mass is $m = 200 \ kg$

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Help with the two questions above? Correct answers?

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(6) first choice: the frequency appears higher and wavelength is shorter.

The car approaches a stationary observer and so the sound will appear to have shorter wavelength. This creates an effect of its siren to sound with higher frequency than it would do if both were stationary.

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$\lambda = \frac{343\frac{m}{s}}{431Hz}\approx 0.80 m$

The third choice "0.80m; 431Hz" is correct

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