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The frequency is measured in hertz...

The frequency is measured in hertz

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**Step-by-Step Solution:** 1. **Understanding Frequency**: Frequency refers to the number of times an event occurs in a specific time period. In the context of sound and waves, it is the number of complete waves that pass a given point in one second. 2. **Defining a Complete Wave**: A complete wave consists of one full cycle, which includes both the upward (crest) and downward (trough) movements. For example, if you visualize a wave, one complete wave is represented from one crest to the next crest. 3. **Measuring Frequency**: If a wave completes one full cycle in one second, we say that the frequency is 1 Hertz (Hz). This means there is one event (one complete wave) occurring in one second. 4. **Multiple Waves**: If three complete waves occur in one second, the frequency is 3 Hertz (3 Hz). This indicates that three events (three complete waves) are happening in that one second. 5. **Unit of Frequency**: The unit of frequency is named after the scientist Heinrich Hertz, who contributed significantly to the study of waves and frequencies. Therefore, frequency is measured in Hertz (Hz), where 1 Hz equals 1 event per second. 6. **Conclusion**: In summary, frequency is a measure of how often an event occurs in a unit of time, specifically measured in Hertz, where 1 Hz equals 1 complete cycle per second. ---
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