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Five metals that are more useful for electroplating

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Radda [10]2 years ago

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5 meteals that are more useful for electroplating carbon,seth,

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The frequency of sound heard by the boy is 1181 Hz.

Explanation:

Given that,

Frequency of sound from alarm $f_{0} = 1210\ Hz$

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$f = f_{0}(\dfrac{v+v_{0}}{v-v_{s}})$

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$v_{s}$ = speed of source

$v$ = speed of sound

Put the value into the formula

$f=1210\times\dfrac{343+(-8.25)}{343-0}$

here, source is at rest

$f=1180.8\ Hz$

$f=1181\ Hz$

Hence, The frequency of sound heard by the boy is 1181 Hz.

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