debramknoxx
07.04.2020 •
Physics
Would sound travel faster in a thick piece of metal (high density) or a large hollow piece of metal (low density)?
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Ответ:
See the explanation below
Explanation:
The speed of sound waves can be calculated using the following equation:
Let's do the exercise of comparing two materials one denser than the other, as is steel and aluminum
ro_steel = 7500 [kg/m^3]
ro_aluminum = 2700 [kg/m^3]
E_steel = 200 [GPa]
E_aluminum = 70 [GPa]
Now replacing the values in the equation for each material.
And for the aluminum
In this way we can see that sound propagates faster in denser materials.
Ответ: