Electricity & Magnetism – Lecture 1 Electric Forces ...

Musical frequency: A above middle C is 440 Hz and is the standard of western music. The standard for acoustics and sound for human hearing is 1,000 Hz = 1KHz. The normal maximum range of human hearing is 20Hz to 20KHz. Velocity of sound is 331 m/s at 0 C and increases by 0.6 m/s for each degree C ................
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