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A tortoise and rabbit engage in a footrace over a distance of4.40 km. The rabbit runs 0.480 km, then stops for a 80.0-min nap. Upon awakening, he remembers therace, and runs twice as fast. Finishing the course in a total timeof 1.80 h, the rabbit wins therace.What was his average speed before he stopped for a nap?
A tank is 2m above the connection to the water controls. The water then travels up a vertical pipe to the shower head 3.5m above the water controls. Determine the water pressure at the shower controls
A conducting sphere carrying a charge ‘q' has a radius ‘a'. It is inside a concentric hollow conducting sphere of inner radius ‘b' and outer radius ‘c'. What is the charge on the outer surface
A 130-g baseball, moving along the x-axis with speed 29.0 m/s strikes a fence at a 45 degree angle and rebounds along the y-axis with unchanged speed. Give x and y components of its change in momentum.
An electron is released from rest1.5cm from an infinite charged plane. It accelerates toward the plane and collides with a speed of3.0107m/s. What is the surface charge density of the plane
You charge an initially uncharged 62.7-mF capacitor through a 46.9-? resistor by means of a 9.00-V battery having negligible internal resistance. Find the time constant of the circuit. What is the charge of the capacitor 1.45 time constants after the..
a 100 kg wrecking ball savings on a 15.0 m long cable. if is swings from rest 4.0 m above the lowest piont, what is the tension in the cable at the lowest point
Suppose a 29.5 kg child sits 1.89 m to the left of center on the same seesaw as the problem you just solved. Find the mass of the second child
Nuclear transmutation (causing atoms of one element to become a different element) is possible using currently-available technology. Suppose you check metals prices and decide to try converting osmium into iridium, and that each atom transmuted re..
You have 33 tuning forks that oscillate at close but different frequencies. What are the (a) maximum and (b) minimum number of different beat frequencies you can produce by sounding the forks 2 at a time, depending on how the frequencies differ?
you have one heavy cart at 1.5kg and the lighter one at 1.0kg. neglect friction. the heavy cart starts at rest. what are the magnitude and direction of the systems momentum
As astronauts travel between the Earth and the moon, their mass remains constant, but their weight diminishes. Determine the minimum weight an astronaut would have
At a height of fifteen meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
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