relative density of two substance a and b are 2.5 and 0.9 respectively.find density of a and b also find whether they will sink or float in water.given that density of water is 1000kg/m3. (a - 2500 kg/m3 sink in water, b - 9000 kg/m3, floates in water.)
Answers
Answer:
density of A == 2.5 * 1000 = 2500 kg/m3
density of B == 0.9 * 1000 = 900 kg/m3
Explanation:
Relative Density of A = 2.5
Density of Water = 1000 kg/m3
therefore, density of A == 2.5 * 1000 = 2500 kg/m3
Relative Density of B = 0.9
Density of Water = 1000 kg/m3
therefore, density of B == 0.9 * 1000 = 900 kg/m3
As we know,
Density of Water = 1000 kg/m3
If density of a substance is greater than water than it would sink and if density of that substance is less than that of water than it would float .
a) Density of substance A ( i.e. = 2500 kg/m3 ) is greater than that of water so it would sink down.
b) Density of substance b ( i.e. = 900 kg/m3 ) is less than that of water it would float .
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Answer:
Relative Density of a substance = density of substance /density of water
Relative density of A = Density of A/density of water
Therefore; 2.5 = density of A /1000 kg/m³
Density of A = 2.5 × 10³ kg/m³
Relative density of B = Density of B/density of water
0.9 = Density of B / 1000 kg/m³
Density of B = 0.9 × 1000 kg/m³
= 900 kg/m³
Therefore; substance A will sink in water as it is denser than water, while substance B will float as it is less denser than water.