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3 years ago

Which best explains why sound travels fastest through a solid?

Physics

2 answers:

s344n2d4d5 [400]3 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]3 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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If all colors of light are mixed together, what color will he seen?

ANTONII [103]

Answer:

Black. or a dark brown.

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3 years ago

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earnstyle [38]

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3 years ago

What is the resistance of a 3.5 m copper wire (Rho= 1.7x10-8 Ohm·m) that 1 point

VikaD [51]

Answer:

(D)

Explanation:

Given :

l=3.5 m

$A=5.26*10^{-6}$ $m^{2}$

$p=1.7*10^{-8} ohm.m$

Resistance can be calculated as :

$R=p\frac{l}{A} \\R=1.7*10^{-8} \frac{3.5}{5.26*10^{-6} }$

$R=\frac{5.95*10^{-2} }{5.26} \\R=1.13*10^{-2}$

Resistance of the wire will be 1.1× $10^{-2}$ ohms

Option D is correct

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2 years ago

Explain the relationship between power,energy,and time

strojnjashka [21]

Energy = power * time

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3 years ago

g a mass of 1.3 kg is pushed horizontally against a massless spring with a spring constant of 58 n/m until the spring compresses

ExtremeBDS [4]

Answer: $1.102\ J$

Explanation:

Given

Mass $m=1.3\ kg$

Spring constant $k=58\ N/m$

Compression in the spring $x=19.5\ cm\ or\ 0.195\ m$

When the mass leaves the spring, the elastic potential energy of spring is being converted into kinetic energy of mass i.e.

$\Rightarrow \dfrac{1}{2}kx^2=\dfrac{1}{2}mv^2\\\\\Rightarrow \dfrac{1}{2}\cdot 58\cdot (0.195)^2=\dfrac{1}{2}mv^2\\\\\Rightarrow \dfrac{1}{2}mv^2=1.102\ J$

The kinetic energy of the mass is 1.102 J.

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3 years ago