Question

if a wave has a frequency of 2 hz, how many waves pass by in 1 sec?
.2 waves
20 waves
2 waves
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Explanation:

Step1: Recall the definition of frequency

Frequency \( f \) is defined as the number of waves \( n \) that pass a given point per unit time \( t \). The formula is \( f=\frac{n}{t} \).

Step2: Substitute the given values

We are given \( f = 2\space Hz\) and \( t=1\space s\). Using the formula \( n = f\times t\), substituting \( f = 2\space Hz\) (where \( 1\space Hz=1\space wave/s\)) and \( t = 1\space s\), we get \( n=2\times1\).

Answer:

2 waves