How many times louder is the intensity of

sound at a rock concert in comparison with

that of a whisper, if the two intensity levels

are 130 dB and 2 dB, respectively?

Answer: the intensity of sound at a rock concert will be 6.31 * 10^12 time louder than that of a whisper.

Explanation: Given that sound at a rock concert power is 130 dB of intensity l2

a whisper power is 2 dB of intensity l1

Using the formula

130dB - 2dB = 10Log (I2/I1)

128/10 = logI2/I1

12.8 = log (I2/I1)

I2/I1 = 6.31 * 10^12

Therefore, the intensity of sound at a rock concert will be 6.31 * 10^12 time louder than that of a whisper.