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Ricardo, mass 87 kg and Carmelita, who islighter, areenjoying Lake Merced at dusk in a30 kg canoe. When thecanoe is at rest in theplacid water, they exchange seats, whichare3.0 m apart and symmetrically located withrespect tothe center of the canoe. Ricardo notices that the canoemoved 51.7cm relative to a submerged log duringthe exchange andcalculates Carmelita's mass, which she has nottold him. What is it?
