Polytechnic Physics Set 4
61: At a temperature of 20°C, the minimum distance a person must be to hear an echo is 12.2 meters 17.2 meters 15.2 meters 34.4 meters Answer: 34.4 meters 62: When converting low pitch sound to high pitch sound, we increase Frequency Amplitude Velocity Wavelength Answer: Frequency 63: The value of ‘g’ on the surface […]
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