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PolarNik [594]
4 years ago
9

A train is approaching the station. Explain what happens to the frequency of the sound as the train draws closer. What do you he

ar?
Physics
2 answers:
Hitman42 [59]4 years ago
3 0
The frequency of sound waves goes up, so the pitch goes up as well. More frequent=higher pitched
Assoli18 [71]4 years ago
3 0

Answer:

Frequency is more

Explanation:

If there is a apparent change in the frequency of sound due to the relative motion between the observer and the source, it is called doppler effect.

The formula for the doppler effect is

f' = \frac{v-v_{o}}{v-v_{s}}f

Where, f be the original frequency, f' be the apparent frequency, v be te speed of sound, v0 be the speed of observer and vs be the speed of source.

So, as observer at rest, vo = 0

f' = \frac{v}{v-v_{s}}f

Here, f' > f

So, the frequency of sound heared y the observer is more.

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Answer: even heating

Explanation:

the earth rotates

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3 years ago
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¿Cuál es la frecuencia de una ola con una velocidad de 14 m / s y una longitud de onda de 20 metros?
Margaret [11]

Responder:

<h2>0.7Hertz </h2>

Explicación:

Usando la fórmula para calcular la velocidad de onda que se expresa como se muestra.

Velocidad de una onda = frecuencia * longitud de onda

v = fλ

Dada la velocidad de onda = 14 m / sy longitud de onda = 20 metros

frecuencia f = v / λ

f = 14/20

f = 0.7Hertz

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7 0
3 years ago
The shifting of the observed wavelength of light due to the motion of the source toward or away from the observer is called the
alexdok [17]

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doppler effect

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Collectively this phenomenon is known as the Doppler effect.

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3 years ago
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The path of the raction occurs on the basis of mass of the nuclei involved in reaction.
In case of nuclear fusion, two or more nuclei having less mass fuse(combine, join) together to form a new nuclei(heavier mass but it is relatively stable). During fusion, matter is not conserved because some of the matter is converted into energy(light). This reaction evolves a huge amount of energy and there comes Einstein's famous Energy-mass equivalence formula E=mc^2! :D. The nuclear reaction occuring in stars(including our sun ) is "fusion".

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Both, Fission and Fusion releases enormous amount of energy and modern nuclear weapons works on the principle of nuclear fission.

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3 years ago
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