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Kruka [31]
3 years ago
17

Which best explains why sound travels fastest through a solid?

Physics
2 answers:
s344n2d4d5 [400]2 years ago
8 0

Answer:

Sound is a mechanical wave and depends on the medium to propagate. Some of the characteristics from the medium like density or elasticity determine the speed of propagation.

Explanation:

In the air, the speed of propagation in 331 m/s, and in a solid like the iron is 5190 m/s. This is caused because at structural level, each molecule in the material structure needs to crash and transfer the energy to another. In “crowed spaces” that propagation will be faster, kind of similar o a domino effect.

arlik [135]2 years ago
5 0
The spacing of the molecules enables sound to travel much faster through a solid than a gas.
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A street light is on top of a 8 foot pole. Joe,
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8/4 = y/y-x

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y = 8

Hope this helps
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Which statement is true of a glass lens that diverges light in air?
Arisa [49]
C it is uniformly thick
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4vir4ik [10]

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2 years ago
As a diligent physics student, you carry out physics experiments at every opportunity. At this opportunity, you carry a 1.33 m l
deff fn [24]

Answer: 62 μT

Explanation:

Given

Length of rod, l = 1.33 m

Velocity of rod, v = 3.19 m/s

Induced emf, e = 0.263*10^-3 V

Using Faraday's law, the induced emf of a rod can be gotten by the formula

e = blv where,

e = induced emf of the rod

b = magnetic field of the rod

l = length of the rod

v = velocity of the rod. On substituting, we have

0.263*10^-3 = b * 1.33 * 3.19

0.263*10^-3 = b * 4.2427

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b = 0.0000620 T

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8 0
3 years ago
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La tension que se transmite en la cuerda BD es de 75 lb. Calcula el momento de fuerza generada por la cuerda respecto al punto C
Bas_tet [7]

Answer:

Mc = 1920[lb*in]

Explanation:

Para poder solucionar este problema debemos realizar un análisis estático, por tal motivo lo primero es realizar un diagrama de cuerpo libre con las respectivas fuerzas actuando sobre la barra ABC. DE igual manera calcular la geometría de la configuración mostrada.

El diagrama de cuerpo libre se puede ver en la imagen adjunta, con la solución de este problema.

Lo primero es determinar el angulo t, el cual por medio de las propiedades del triangulo rectángulo se puede determinar.

Con este angulo (t) ya determinado, fijamos la atención en el triangulo BCD, este triangulo no es rectángulo, pero por medio de la ley de senos podemos determinar el angulo omega.

Después de determinar el angulo omega, restamos el angulo (t) para poder determinar el angulo (a).

Seguidamente realizamos una sumatoria de momentos alrededor del punto C, utilizado las respectivas fuerzas con los ángulos descompuestos.

El momento en el punto C es de 1920 [Lb*in].

Nota: ya que no se menciona la fuerza en el punto A, esta se desprecia y no se tiene en cuenta en los calculos. En la imagen adjunta se puede ver el procedimiento desarrollado.

7 0
3 years ago
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