i was watching the italien job again this weekend and my favorite part is the speedboat chase through the venice canals. meanwhile, the safe is actually underwater, and the guys are breaking it open to get the gold out. you know why they do it underwater? because gold is very heavy. and underwater, buoyant forces equal to the mass of water the gold displaces. Therefore, the net force is the weight MINUS the buoyant force. ha lighter. smart people right?
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