Explanation:
it is almost zero .this is because the distance and the electrostatic force are inversely proportional
Una ambulancia se aleja de una persona en línea recta a razón de 30 m/s. Si la sirena
1 answer:
Answer:
Explanation:
Use Doppler effect equation:
The Doppler effect is a physical phenomenon where an apparent change in wave frequency is presented by a sound source with respect to its observer when that same source is in motion. The general equation is given by:
- When the observer moves towards the source
is positive.
- When the observer moves away from the source
- When the source moves towards the observer
is negative.
- When the source moves away from the observer
Since the problem don't give us aditional information let's assume:
Which is the speed of sound in air.
And using the information provided by the problem:
The frequency perceived by the person is 331.046Hz
<em><u>Translation:</u></em>
<em><u></u></em>
Usa la ecuación del Efecto Doppler:
El efecto Doppler es un fenómeno físico en el que una fuente de sonido presenta un cambio aparente en la frecuencia de onda con respecto a su observador cuando esa misma fuente está en movimiento. La ecuación general viene dada por:
- Cuando el observador se mueve hacia la fuente
- Cuando el observador se aleja de la fuente es
- Cuando la fuente se mueve hacia el observador
- Cuando la fuente se aleja del observador
Como el problema no nos da información adicional, supongamos que:
La cuál es la velocidad del sonido en el aire.
Y utilizando la información proporcionada por el problema:
La frecuencia percibida por la persona es 331.046Hz
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