Aparty boat resting in the middle of a small pond is holding you and 25 of your friends. the hull is broken and water begins pouring in, prompting you and your friends to evacuate onto a life raft. an empty life raft of cross-sectional area 2.0 m x 3.0 m has its top edge 0.36 m above the waterline. a. can the raft hold you and all of your 75-kg passengers before water starts to flow over its edges? b. it is discovered that one of the passengers brought their pet boulder aboard the life raft with them. explain what would happen (if anything) to the pond's water level if the rock were thrown overboard and into the pond.