Answer:
A
Explanation:
earthquakes release energy
Babylon
India submerged bodies
Greek
Microscope
20 miles = 32186.9 meters
32186.9 / 340 = 94.667352
It will take 94.667 seconds to hear an explosion from 20 miles away.
True.
Centripetal force is the force that keeps an object moving around a centre, and the velocity of the object is always changing as it travels round the centre. The centripetal force hence causes centripetal acceleration.
I would think it is B I am not certain though..