(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

a vibrating source makes 16 pulses every 4 seconds

find the frequency

2. Relevant equations

frequency=n/t

pulse is half a wave

3. The attempt at a solution

if we consider a pulse as half a wave then the source produces 8 waves

then frequency=8/4=2 hertz

but that's not the right answer

according to the text book:

frequency=16/4=4 Hz

I'm completely confused can u explain the right answer?

Thanks in advance!!

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# A frequency problem

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