Physics, 29.10.2020 02:00 mariateamop
A 22.0 kg bucket of concrete is connected over a very light frictionless pulley to a 375 N box on the roof of a building as shown in the figure. There is no appreciable friction on the box, since it is on roller bearings. The box starts from rest. How fast is the bucket moving after it has fallen 1.50 m (assuming that the box has not yet reached the edge of the roof)?
A. 3.28 m/s
B. 5.20 m/s
C. 4.67 m/s
D. 3.00 m/s
Answers: 1
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Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?
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By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?
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A 22.0 kg bucket of concrete is connected over a very light frictionless pulley to a 375 N box on th...
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