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For its size, the common flea is one of the most accomplished jumpers in the animal world. A 2.5mm -long, 0.49 mg critter can reach a height of 20cm in a single leap.[A] Neglecting air drag, find the takeoff speed of such a flea?[B] In fact, most humans can jump no more than 60cm from a crouched start. Compute the kinetic energy per kilogram of mass at takeoff for such a 77kg person?[C] If a 77 kg , 1.8 -tall human could jump to the same height compared with his length as the flea jumps compared with its length, how high could he jump, & what takeoff speed would he need?[D] Compute the kinetic energy of this flea at takeoff & its kinetic energy per kilogram of mass.
General relativity says that the total orbital energy of the binary system consisting of two neutron stars will decrease over time through the emission of gravitational waves. If this happens slowly sufficient that the orbit stays circular, response ..
A 29.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.0 N and is directed at the angle of 30.0° above the horizontal. Find out the coefficient of kinetic friction.
An ocean liner leaves New York City and travels 18.0° north of east for 232 km. How far east and how far north has it gone? In other words, what are the magnitudes of components of the ship's displacement vector in the following directions.
Two speakers, one directly behind the other, are each generating a 429-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of ..
Suppose that the mass of the dishwater is large as much as necessary so that its temperature does not change appreciably.
A dockworker applies a constant horizontal force of 84.0\({\rm N}\) to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 12.5\({\rm m}\) in a time 4.80\({\rm s}\)
Calculate the smallest coefficient of static friction necessary for mass A to remain stationary.
What fraction of the initial kinetic energy was transferred
What is the horizontal distance the airplane engine falls. find out the time that was recorded on Earth.
A continuous line of charge lies along an x axis, extending from x = +x0 to positive infinity. The line carries charge with the uniform linear charge density λ0. What are the magnitude and direction of the electric field at the origin.
A 1.8 kg ball of putty moving to the right has a head-on inelastic collision with the .50 kg putty ball moving to the left. If the combined blob doesn't move just after the collision, what can you end about the relative speeds of the balls before the..
Coefficient of kinetic friction between tires and road
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