43. A wave of sound has a period of .0074 seconds. What is its frequency?

To find the frequency of a sound wave, you can use the formula \( f = \frac{1}{T} \), where \( f \) is the frequency and \( T \) is the period. In this case, \( T = 0.0074 \) seconds. Plugging it in gives \( f = \frac{1}{0.0074} \), which equals approximately 135.14 Hz. So, the frequency of the sound wave is about 135.14 hertz! The concept of sound frequency is fascinating because different frequencies correspond to different pitches. For instance, a frequency of 440 Hz is the musical note A above middle C, which is commonly used as a tuning standard. So next time you hear a sound, remember, it’s all about those vibin’ frequencies!