10 c.c of cork sheet and 10 c.c of glass plate are combined together.Will the combination float in water?(relative densities of cork and glass are 0.2 and 2.5 respectively)
Answers
10 c.c of cork sheet and 10 c.c of glass plate are combined together. The combination will NOT folat in water.
Explanation:
Volume of cork sheet = 10 cc
Volume of glass = 10 cc
relative density of cork = 0.2
Therefore density of cork = 0.2 gm/cc
Similarly density of glass = 2.5 gm/cc
Mass of cork = Volume × Density
= 10 × 0.2
= 2 gm
Similarly
Mass of glass = 10 × 2.5 = 25 gm
Combined mass of cork and glass = 25 + 2 = 27 gm
Combined volume of cork and glass = 10 + 10 = 20 cc
When placed in water the maximum volume of water displaced by the combination will be 20 cc
Density of water = 1 gm/cc
Therefore, the mass of water displaced = 20 × 1 = 20 gm
Since mass of water displaced is less than the combined mass of corkc and glass combination
Therefore, the combination will not float in water.
Hope this answer is helpful.
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