genesismomo的博客If the briefcase floats after you toss it out, then it still displaces its weight in water, and there is no change. However, if the briefcase is heavier than water it will displace its volume, not...
genesissin的博客If the briefcase floats after you toss it out, then it still displaces its weight in water, and there is no change. However, if the briefcase is heavier than water it will displace its volume, not...
jery_lee的博客If the briefcase floats after you toss it out, then it still displaces its weight in water, and there is no change. However, if the briefcase is heavier than water it will displace its volume, not...