For an electron in a hydrogen atom (a) when the electron is in the ground state, calculate (r) and (r2) in terms of the bohr radius (b) when the electron is in the ground state, calculate (x) and (y2) in terms of the bohr radius. do not try to integrate to calculate the expectation values! you can do it in smarter way! a (c) when the electron is in the state n = 2,1 = 1, m = -1, calculate (r2).

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?