(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?

(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?

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter5: Gravitation

Section: Chapter Questions

Problem 5.17P

See similar textbooks

Similar questions

At $602 per ton, what would be the cost of straight urea needed to apply 0.9 lb N/M 3 times per season to 78.0 acres of school grounds? Answer to the nearest dollar.
why is it not -9.8 m/s? also why is it not 8.8sin(-25)?
If there are problems on drift velocity in which radius is given, what formula should we use in determining the cross-sectional area that is expressed in square meters? A. A = π r2 B. V = π r2 h C. V = π r h D. A = π r
Check Your Understanding If atmospheric resistance is neglected find the maximum height for the mortar shell. Is calculus required for this solution?
Calculate the speed a spherical rain drop would achieve falling from 5.00 km (a) in the absence of air drag (b) with air drag. Take the size across of the drop to be 4 mm, the density to be 1.00103 kg/m3, and the surface area to be r2.
A space station, in the form of a wheel 120 m in diameter, rotates to provide an artificial gravity of 3.00 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of the wheels rotation in revolutions per minute that will produce this effect.
Check Your understanding Repeat ExampIe12.4 assuming that the forearm is object of uniform density that weighs 8.896 N.
The flow of blood through a 2.00106 m -radius capillary is 3.80109cm3/s . (a) What is the speed of be blood now? (b) Assuming all the blood in the body passes through capillaries, how many of them must there be to carry a total flow of 90.0 cm3/s?
A 547g squirrel with a frontal surface area of 0.0145m2 falls to the ground from a 5.3m tree. Assume the density of air is 1.21kg/m3. Neglecting the drag force, what is the velocity, in meters per second, of a 56kg person after falling, from rest, by that same distance?
Oceanographers use submerged sonar systems, towed by a cable from a ship, to map the ocean floor. In addition to their downward weight, there are buoyant forces and forces from the flowing water that allow them to travel in a horizontal path. One such submersible has a cross-section area of 1.3 m2, a drag coefficient of 1.2, and, when towed at 5.1 m/s, the tow cable makes an angle of 30° with the horizontal. What is the tension in the cable?
Scientists found evidence that Mars may once have gad an ocean that is 0.500 km deep. The acceleration due to gravity on mars is 3.72 m/s2. What would be the fluid pressure (in Pa) at the bottom of the ocean? To solve this, which of the following is/are the best equation/s to use (check as many that applies):
How much force doesthe atmosphere exert on one side of a vertical wall 4.00-m high and10.0-m long?