The problem states: Suppose that, while lying on a beach near the equator watching the Sun set over a calm ocean, you start a stopwatch just as the top of the Sun disappears. you then stand, elevating your eyes by a height H = 1.70 m, and stop the watch when the top of the Sun again disappears. If the elapsed time is t = 11.1 s, what is the radius 'r' of the Earth?
How in the world are we supposed to find the radius? O.O!?
How in the world are we supposed to find the radius? O.O!?