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Fri 3 Nov, 2006 03:41 pm
Earth rotates on an axis through its poles. the distance from the axis to a location on Earth 30 degrees north latitude is about 3429.5 miles. Therefore a location on Earth at 30 degrees north latitude is spinning on a cricle of radius 3429.5 miles. Compute the linear speed on the surface of Earth at 30 degrees north latitude.
Hi Ash, welcome to the forum.
C = <pi>d = <pi>(2)(3429.5) = 6859 mi
6859 mi/24 hr = 285.7916... mi/hr
it says the answer is 898 miles per hour but i have no clue how to get that
Try forgot to multiply by pi
2(pi)r = 21548 miles
21548 miles / 24hr = 898 miles/hr
Isn't this more a math problem than a riddle?
"Riddles and Lateral Thinking go here."
I think this easily qualifies as one of the latter. However, if you trawl around the net it is clear, the reputation of this forum for providing answers is unsurpassed due to its knowledgeable contributors. From liner speed (providing I don't answer) to how to keep your soufflé from collapsing. If you must totally utterly necessarily have an answer Riddles will provide it. Does that answer your question?
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