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3 years ago

Why echos are undesirable in a big hall

Physics

2 answers:

KatRina [158]3 years ago

8 0

Answer:

Helloooo

Sound created in a big hall will persist by repeated reflection from the walls until it is reduced to a value where it is no longer audible. The repeated reflection that results in this persistence of sound is called reverberation. In an auditorium or big hall excessive reverberation is highly undesirable

Explanation:

thanks....

Delicious77 [7]3 years ago

3 0

Answer:

Hello There!

Explanation:

In physics, reverberation produces echo and as a result that makes undesirable sound.In a big hall, it interferes with the actual sound. It gives confusion when people are having a conversation and also because it interferes with the original sound.

hope this helps,have a great day!!

~Pinky~

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Answer:

r=15.53 nm

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Explanation:

Lets take electron is in between iron and uranium

Charge on electron $q_1= -1.602\times 10^{-19}C$

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Charge on uranium $q_3= 1.602\times 10^{-19}C$

We know that force between two charge

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For equilibrium force between electron and iron should be force between electron and uranium

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Now by balancing the force

$K\dfrac{q_1 q_2}{r^2}=K\dfrac{q_1 q_3}{(37.5-r)^2}$

$K\dfrac{q_1q_2}{(37.5-r)^2}=K\dfrac{q_1 q_3}{r^2}$

$q_2= 2\timesq_1,q_3=q_1$

$\dfrac{q_1\times 2\timesq_1}{r^2}=\dfrac{q_1\times q_1}{(37.5-r)^2}$

So r=15.53 nm

So force

$F=9\times 10^9\dfrac{1.602\times 10^{-19}\times 1.602\times 10^{-19}}{(15.53\times 10^{-9})^2}$

$F=9.57\times 10^{-13}N$

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Answer:

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The question is incomplete. Here is the complete question.

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4 years ago

Why echos are undesirable in a big hall​

Why echos are undesirable in a big hall