A CD was set at an intensity level of 70 dB and a frequency in the range of 400 Hz to 2000Hz. What would be the intensity level in dB of a sound half as loud? 35 dB 65 dB 69.5 dB 60 dB
A CD was set at an intensity level of 70 dB and a frequency in the range of 400 Hz to 2000Hz. What would be the intensity level in dB of a sound half as loud? 35 dB 65 dB 69.5 dB 60 dB
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