Question
Mon April 21, 2014 By: Gaurav Garg

suppose that while lying on a beach near the equator watching the sun set over a calm ocean, you start a stopwatch just at the top of the sun dissapears . You then stand , elevating your eyes by height H=1.7 meters and stop the watch when the top of the sun again disappears . If the elasping time t=11.1 second , what is radius r of the earth??

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Tue April 22, 2014
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