Polaris, the north star, is almost always visible in the same location because a) it is the brightest star in the sky. b) it is gravitationally attracted to our sun. c) it is the closest star to the earth, besides our sun. eliminate d) the axis of the earth passes directly through the north star.
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Physics, 22.06.2019 05:30
Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n
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Which atomic model was proposed as a result of j. j. thomson’s work?
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The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.
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Polaris, the north star, is almost always visible in the same location because a) it is the brightes...
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