Part A Centauri A and Centauri B are binary stars with a separation of 3.45 x 10 2 m and an orbital period of 2.52 x 10' s. Assuming the two stars are equally massive (which is approximately the case), determine their speed. AEd ? U = km/s Submit Request AnswerPart A Is the amount of energy required to get a spacecraft from the Earth to the Moon greater thanI less than, or equal to the energy required to get the same spacecraft from the Moon to the Earth? 0 equal to 0 less than 0 greater than m Quest Answer Part B Choose the best explanation from among the following: O The situation is symmetric, and hence the same amounth energy is required to travel in either direction. 0 It takes more energy to go from the Moon to the Earth because the Moon is orbiting the Earth. O The escape speed of the Moon is less than that of the Earth: therefore, less energy is required to leave the Moon. Part A The Center of Mass of Water Find the center of mass of a water molecule, referring to the figure(Figure 1) for the relevant angles and distances. The mass of a hydrogen atom is 1.0 u, and the mass of an oxygen atom is 16 u, where the atomic mass unit, u, is defined as follows: 1 u = 1.66 x 10-27 kg.). Use the center of the oxygen atom as the origin of your coordinate system. Express your answers using two significant figures separated by a comma. OAL AEd 0 EX ? Figure -104.50 Oxygen Hydrogen