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To prevent damage to floors (and to increase friction), a crutch will often have a rubber tip attached to its end.If the end of the crutch is a circle of radius 1.1cm without the tip, and the tip is a circle of radius 2.6cm , by what factor does the tip reduce the pressure exerted by the crutch?
You shine red laser light with wavelength 670 nm through two narrow slits where the spacing between the slits is 0.005 mm. You use a screen placed far from the slits to detect the interference pattern. What is the smallest angle where the path diff..
In a double-slit experiment, the slit spacing is 0.22m, the distance to the screen is 3.30m, and light of wavelength 662nm is used. What is the thickness of the polystyrene sheet
A closed Gaussian cylinder sits centered around the z-axis and above the xy-plane with a length of A and a radius of R, What is the net charge contained in the cylinder
A small block with mass 0.200 kg is attached to a string passing through a hole in a frictionless, horizontal surface. What is the radius of the circle when the string breaks
Now suppose that the two masses continue to move at the speed from Part A until they encounter a rough surface. The coefficient of friction between the masses and the surface is . If the blocks come to rest after a distance, which of following equ..
A garden hose having an internal diameter of 0.800 in. ( 2.0320 cm ) is connected to a lawn sprinkler that consists merely of an enclosure with 27 holes, each 0.050 in. ( 0.1270 cm ) in diameter
A lens for a 35-mm camera has a focal length given by f= 49mm. A How close to the film should the lens be placed to form a sharp image of an object that is 5.3mm away?
After a spacewalk, a 2.33-kg tool is left 58.9 m from the center of gravity of a 40.1-metric ton space station, orbiting along with it. How much closer to the space station will the tool drift
A woman with mass of 55 kg stands at the rim of a horizontal table having a moment of inertia of 410 kg m2 and a radius of 1.6 m. How much work does the woman do ON THE TABLE to set it into motion
A missile is shot straight up into the air. At the peak of its trajectory, it breaks up into three pieces of equal mass, What is the angle of the remaining piece
Two new particles, which have identical positive charge q3, are placed the same 0.0434 meters apart, and the force between them is measured to be the same as that between the original particles, What is q3
If the original force between two objects is 0.86N, and the distance is tripled, what is the new gravitational force between the objects
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