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 is negative.
- When the source moves towards the observer is negative.
- When the source moves away from the observer is positive.
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 es positivo.
- Cuando el observador se aleja de la fuente es negativo.
- Cuando la fuente se mueve hacia el observador es negativa.
- Cuando la fuente se aleja del observador es positiva.
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
Answer:
a. v' = 24.22 x 10 ⁻³
b. β = 0.825 T
Explanation:
V = 150 V , E = 6.0 x 10 ⁶ N / C
a.
¹/₂ * m * v² = e * V
v = √ 2 * e / m * V
v = √ 2 * 1.76 x 10 ¹¹ * 150 v = √ 5.28 x 10 ¹³
v = 7.26 x 10 ⁶ m /s
v' / c = 7.26 x 10 ⁶ m /s / 3.0 x 10 ⁸ = 24.22 x 10 ⁻³
b.
β = E / V
β = 6.0 x 10 ⁶ / 7.266 x 10 ⁶
β = 0.825 T
c.
When the increasing the accelerating potential speed it doesn't change the up wired the electric force and the magnetic force the electron be beat down more .
Answer:
The pair of terminals to produce an output voltage of 8V are K and M.
Explanation:
A transformer is an electronic device that can be used to increase or decrease an output voltage. It consists of secondary and primary coils, and operates on the principle of induction.
=
where: is the voltage in the secondary coil, is the voltage in the primary coil, is the number of turns in the secondary coil and is the number of turns in the primary coil.
In the question, let us combine the number of turns in the secondary coil. So that,
= 15 + 5 = 20
=
=
= 8
= 8V
For the output voltage to be equal to 8V, the pair of terminals required are K and M.