two children are at opposite ends of an aluminium rod one strikes the end of the rod with the stone find the ratio of times taken by sound wave in air and in aluminium to reach that second child
also explain that how speed of sound in aluminium comes 6420
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Answered by
4
Answer:
Let the length of the aluminium rod be d.
Speed of sound wave in aluminium at 25°C, vAl = 6420 ms-1
Therefore, time taken by the sound wave to reach the other end,
t
A
l
=
d
v
A
l
=
d
6420
tAl=dvAl=d6420
Speed of sound wave in air at 25°C, vAir = 346 ms-1
Therefore, time taken by sound wave to reach the other end,
t
A
i
r
=
d
v
A
i
r
=
d
346
tAir=dvAir=d346
The ratio of time taken by the sound wave in air and aluminium:-
t
A
i
r
t
A
l
=
d
346
d
6420
=
6420
346
=
18.55
tAirtAl=d346d6420=6420346=
Answered by
4
Answer:
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