They travel the way the wind is blowing and also towards the shoreline
The sound gets louder as it gets closer and when it passes is gets softer
Since it was dropped, it should be the speed of gravity which is 9.8 meters/second
Answer:
F = K Q1 Q2 / R^2 where K = 9 * 10E9 (1 / 4 pi ∈0)
F = 9.00E9 * (4.6E-16)^2 / .01 = 1.90E-19 N