When a mechanical wave travels through a medium, how does the wave affect the medium's particles?

Physics

1 answer:

andre [41]3 years ago

3 0

Answer:

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Explanation:

The particles of the medium just vibrate in place. As they vibrate, they pass the energy of the disturbance to the particles next to them, which pass the energy to the particles next to them, and so on.

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A metal rod is 25.000 cm long at 25.0 degrees Celsius. When heated to 102.0

ser-zykov [4K]

Answer:

The coefficient of linear expansion $\alpha =2.8\times 10^-5$ \°C

Explanation:

Given initial temperature $t_1=25$ °C

And final temperature $t_2=102$ °C

Initial length $l_1=25.000\ cm$

Final length $l_2=25.054\ cm$

We have to find the coefficient of linear expansion

The coefficient of linear expansion is defined as the change in length per unit original length divide by the change in temperature.

$l_2=l_1(1+\alpha (t_2-t_1))\\l_2-l_1=\alpha l_1(t_2-t_1)\\25.054-25.000=25.000(\alpha (102-25))\\0.054=\alpha\times 25(77)\\0.054=\alpha\times1925\\\alpha =\frac{0.054}{1925}=0.000028\C\\\alpha =2.8\times 10^-5$