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A 4000-lb flywheel with a radius of gyration of 27 in. is allowed to coast to rest from an angular velocity of 450 rpm. Knowing that kinetic friction produces a couple of magnitude 125 lb . in., determine the time required for the flywheel to coast to rest.
A soap film formed in a loop of wire is, because of its weight, not exactly uniform in thickness, but wedge-shaped in cross section. By how much does the film differ in thickness over the distance
A jet airplane is in level flight. The mass of the airplane is m = 8870 kg. At what angle is the airplane banked
A concave shaving mirror has a radius of curvature of +39.9 cm. It is positioned so that the (upright) image of a man's face is 1.54 times the size of the face. How far is the mirror from the face
A 65kg bicyclist rides his 9.8kg bicycle with a speed of 13m/s. What is the magnitude of the braking force
I have the apparent magnitude of the unknowns in the U-B bandwith and have charted the main sequence stars in relation to their B-V values and absolute magnitude. How do I determine the absolute magnitude of the unknowns in the U-B width to determ..
A space traveler moving at a speed of 0.62c with respect to the earth makes a trip to a distant star that is stationary relative to the earth. He measures the length of this trip to be 7.9light-years.
Assume she starts at the top of the wave with a speed of 1.4 meter per second and moves down the wave until her speed increases to 9.5 meter per second. determine how much work is done by the (non conservative) force of the wave
Two events are observed in a frame of reference S to occur at the same point, by the second event occurring after a time of 1.7 s. In a second frame S' moving relative to S, the second event is observed to occur after a time of 2.25s. What is the dis..
A transparent oil with index of refraction 1.21 spills on the surface of water (index of refraction 1.33), determine the thickness of the oil slick
In 1911 Rutherford discovered the nucleus of an atom by observing the scattering of helium nuclei from gold nuclei.
how high does it rise above the point of release. guess the speed of the car just before braking.
Water flowing through a pipe suddenly comes to a section of pipe where the pipe diameter decreases to 86% of its previous value. what is its speed in this smaller section
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