Shey while playing with her elder brother in the garden pool, observed that a wooden block sinksin water but a wooden plank of same weight floats on water. She was very astonished on seeing this Shey's brother on seeing such question mark on her face explained the reason
(a) What is density?
(b) Why some substances float while other sink in water?
(c) Why the wooden plank float on water while the wooden block sink in water though both have same weight?
(d) What value of Shey has shown here?
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Explanation:
a) density is mass by volume
b) objects with great volume than water sink and less than water flot
c) wooden plank has less volume
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