Asmall box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 27 ∘ above the horizontal. the coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively. the box slides down unless the applied force has magnitude 18 n. what is the mass of the box in kilograms?
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Two identical 82 mg dust particles very far apart (pee 0) are moving directly toward each other at a speed of 3698 m/s. the charge on each is-719 ? c. determine how close they will get to each other. let k = 9x109 n-m2/c2 & ignore gravity.
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Asmall box is held in place against a rough vertical wall by someone pushing on it with a force dire...
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