As one of the first astronauts to visit Titan, you are amazed to witness the eruption of a cryovolcano. Unfortunately, due to the atmospheric haze (the "air" is mostly nitrogen and methane, where sound travels at 194 m/s), it is hard to judge the distance and scale of the eruption. You do have a sound meter built into your spacesuit, and it measured an intensity of 172 dB. The sound arrives t = 9 s after the initial explosion is seen.

Starting from the assumption that the source of the explosion produces spherical waves, calculate the (acoustic) power produced. (Units: terawatts, FOUR decimal places)