Concept explainers
The earth’s radius is 6.37 × 106 m; it rotates once every 24 hours.
a. What is the earth’s angular speed?
b. Viewed from a point above the north pole, is the
c. What is the speed of a point on the equator?
d. What is the speed of a point on the earth’s surface halfway between the equator and the pole? (Hint: What is the radius of the circle in which the point moves?)
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