February 26, 2017

Homework Help: physics

Posted by sara on Wednesday, February 15, 2012 at 5:42pm.

Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider Dubuque, Iowa (42.50° N latitude), and Guatemala City (14.62° N latitude). The two cities lie on approximately the same longitude. Do not neglect the curvature of the Earth in determining the following.

If one could burrow through the Earth and dig a straight-line tunnel from Dubuque to Guatemala City, how long would the tunnel be?

-->I know the answer for above and it is
3072992.8 m..i need help with part b

b)From the point of view of the digger, at what angle below the horizontal would the tunnel be directed?

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