In the ammonia (NH3) molecule of Fig. 9-40, three hydrogen

Chapter , Problem 7

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In the ammonia (NH3) molecule of Fig. 9-40, three hydrogen (H) atoms form an equilateral triangle, with the center of the triangle at distance d ! 9.40 $ 10%11 m from each hydrogen atom. The nitrogen (N) atom is at the apex of a pyramid, with the three hydrogen atoms forming the base. The nitrogen- to-hydrogen atomic mass ratio is 13.9, and the nitrogen-to-hydrogen distance is L ! 10.14 $ 10%11 m. What are the (a) x and (b) y coordinates of the molecules center of mass?

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