[问答题]
The masses of the Earbpa:u: ,uqvno z78sg4;d zu0 gj.0uv k1uej 82h(ca b2zrhv6vth and Moon are kg and kg respectively, and their centers are separated by m (a) Where is the CM of this system located? (b) What can you say about the motion of the Earth–Moon system about the Sun, and of the Earth and Moon separately about the Sun?