Physics

Lorelai Hunter

10 January, 18:32

A sound system is being set up in a gazebo in a park. It needs to produce music so that everyone can hear it. How much power would the speakers need to produce in order for the intensity at 5 meters away to be 1 x 10^-8 W/m^2? (assume the shape of the propagation of the sound wave is a hemisphere)

1.87 x 10^-7 W

1.57 x 10^-6 W

1.14 x 10^-6 W

2.46 x 10^-7 W