Answers

2016-02-07T10:08:15+05:30
Wood will float because the weight force of it cant dominate the buoyant force of water
But Iron will sink because weight force dominates the buoyant force of water
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2016-02-07T11:14:58+05:30
the wooden brick will float and the iron brick will sink because density of iron brick is more then the density of water where-else density of wooden brick is less then the density of water.

i hope it helps.....
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