The loudness of sound is measured in decibels in honor of Alexander Graham Bell, inventor of the telephone. A decibel is a dimensionless measure of the ratio of two pressures. If the sound pressure to be measured is P, then the sound loudness L in decibels is defined by L = 20log10 (121.3 where Po is a reference pressure at the limits of audibility. Find the ratio P/Po if the pressure P is caused by a rock band at 115 decibels. times higher than the barely audible reference pressure. The pressure caused by the rock concert is Hint: Use the basic properties of logs to isolate P. P :)

The loudness of sound is measured in decibels in honor of Alexander Graham Bell, inventor of the telephone. A decibel is a dimensionless measure of the ratio of two pressures. If the sound pressure to be measured is P, then the sound loudness L in decibels is defined by L = 20log10 (121.3 where Po is a reference pressure at the limits of audibility. Find the ratio P/Po if the pressure P is caused by a rock band at 115 decibels. times higher than the barely audible reference pressure. The pressure caused by the rock concert is Hint: Use the basic properties of logs to isolate P. P :)