For the following questions, assume that the Earth is a sphere of radius r. = 6378.1 km. (a) Consider two points on the equator at coordinates (latitude, longitude) of (0°N, 20ºE) and (0°N, 40°W). What is the surface distance between these two points, measured in km? Express your answer to 4 significant digits.

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For the following questions, assume that the Earth is a sphere of radius rę = 6378.1 km.
(a) Consider two points on the equator at coordinates (latitude, longitude) of (0°N, 20ºE) and
(0°N, 40°W). What is the surface distance between these two points, measured in km?
Express your answer to 4 significant digits.
(b) Consider two points with the same longitudes as in part (a) but at latitude 45°N. What is
the surface distance between these two points? Express your answer to 4 significant digits.
Transcribed Image Text:For the following questions, assume that the Earth is a sphere of radius rę = 6378.1 km. (a) Consider two points on the equator at coordinates (latitude, longitude) of (0°N, 20ºE) and (0°N, 40°W). What is the surface distance between these two points, measured in km? Express your answer to 4 significant digits. (b) Consider two points with the same longitudes as in part (a) but at latitude 45°N. What is the surface distance between these two points? Express your answer to 4 significant digits.
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