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264_Physics ProblemsTechnical Physics

# 264_Physics ProblemsTechnical Physics - 266 P9.39 Linear...

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266 Linear Momentum and Collisions P9.39 Take x -axis starting from the oxygen nucleus and pointing toward the middle of the V . Then y CM = 0 and x m x m i i i CM = = x x CM CM u 0.100 nm u 0.100 nm u u u nm from the oxygen nucleus = + °+ ° + + = 0 1 008 53 0 1 008 53 0 15 999 1 008 1 008 0 006 73 . cos . . cos . . . . . a f a f FIG. P9.39 *P9.40 Let the x axis start at the Earth’s center and point toward the Moon. x m x m x m m CM kg 0 kg m kg m from the Earth’s center = + + = × + × × × = × 1 1 2 2 1 2 24 22 8 24 6 5 98 10 7 36 10 3 84 10 6 05 10 4 67 10 . . . . . e j The center of mass is within the Earth, which has radius 6 37 10 6 . × m. P9.41 Let A 1 represent the area of the bottom row of squares, A 2 the middle square, and A 3 the top pair. A A A
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