(a) Sand dunes on a desert island move as sand is swept up the windward side to settlein the leeward side. Such "walking" dunes have been known to travel 16 feet in a yearand can travel as much as 120 feet per year in particularly windy times. Calculate theaverage speed of 16 ftly in m/s. Next, calculate the average speed of 120 ftly in m/s.1.(b) Fingernails grow at the rate of drifting continents, about 10 mm/yr. Approximatelyhow long did it take for North America to separate from Europe, a distance of about3000 miles?

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Asked Mar 4, 2019

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(a) Sand dunes on a desert island move as sand is swept up the windward side to settle
in the leeward side. Such "walking" dunes have been known to travel 16 feet in a year
and can travel as much as 120 feet per year in particularly windy times. Calculate the
average speed of 16 ftly in m/s. Next, calculate the average speed of 120 ftly in m/s.
1.
(b) Fingernails grow at the rate of drifting continents, about 10 mm/yr. Approximately
how long did it take for North America to separate from Europe, a distance of about
3000 miles?
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(a) Sand dunes on a desert island move as sand is swept up the windward side to settle in the leeward side. Such "walking" dunes have been known to travel 16 feet in a year and can travel as much as 120 feet per year in particularly windy times. Calculate the average speed of 16 ftly in m/s. Next, calculate the average speed of 120 ftly in m/s. 1. (b) Fingernails grow at the rate of drifting continents, about 10 mm/yr. Approximately how long did it take for North America to separate from Europe, a distance of about 3000 miles?

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Step 1

(a)

The average speed of 16 ft/y in m/s is,

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Step 2

The average speed of 120 ft/y in m/s is,

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Step 3

(b)

The time taken for s...

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