Understanding the Relationship
* Period (T): The time it takes for one complete wave cycle to pass a given point. Measured in seconds (s).
* Frequency (f): The number of complete wave cycles that pass a given point per second. Measured in Hertz (Hz).
The Formula
The relationship between period and frequency is inverse:
* f = 1 / T
Calculation
* You are given T = 4 seconds.
* Substitute this into the formula: f = 1 / 4 seconds
* Therefore, f = 0.25 Hz
Answer
The frequency of the wave is 0.25 Hz.