C CUNY New member Jul 2, 2010 #1 What must be the elevation of an observer in order that he may be able to see an object on the earth thirty miles away? Assume the earth to be a smooth sphere. [Assume the earth is a sphere of radius 3956 miles.]
What must be the elevation of an observer in order that he may be able to see an object on the earth thirty miles away? Assume the earth to be a smooth sphere. [Assume the earth is a sphere of radius 3956 miles.]
