Question

1. what is the frequency of a spiked wave with a period of 0.45 seconds? a 2.2 hz b 4.4 khz c 45 khz d 2.2 mhz

Explanation:

Step1: Recall frequency - period relation

The formula is $f=\frac{1}{T}$, where $f$ is frequency and $T$ is period.

Step2: Substitute given period

Given $T = 0.45\ s$, then $f=\frac{1}{0.45}\ Hz\approx2.2\ Hz$.

Answer:

A. 2.2 Hz