11. Lis apparent werght in a liquid of densey 500 \( \operatorname{kgm}^{-3} \) 2) A matel qube of sije sides \( 2 \mathrm{~cm} \) weigh \( 0.56 \mathrm{~N} \) in air Colculatle a) its apparant weight when immeresed in whale Spirit of densty \( 0.85 \mathrm{gem}^{-3} \) b) The density of the metrel of which it is mace
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20. The Mariana trench is located in the floor of the Pacific Ocean at a depth of about $11000 \mathrm{~m}$ below the surface of the water. The density of seawater is $1025 \mathrm{~kg} / \mathrm{m}^{3}$. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation window (radius $=0.10 \mathrm{~m}) ? \quad$ (b) For comparison, determine the weight of a jetliner whose mass is $1.2 \times 10^{5} \mathrm{~kg}$.
A uniform tapering vessel shown in figure is filled with liquid of density $900 \mathrm{kgm}^{-3}$. The force that acts on the base of the vessel due to liquid is (Take, $g=10 \mathrm{~ms}^{-2}$ ) (a) $3 . \overline{6} \mathrm{~N}$ (b) $7.2 \mathrm{~N}$ (c) $9.0 \mathrm{~N}$ (d) $12.0 \mathrm{~N}$
Properties of Liquids
Round 1
A solid of density 5000 kg/m^3 weighs 0.5 kgf in air. It is completely immersed in water of density 1000 kg/m^3 . Calculate the apparent weight of the solid in water.
Vipin K.
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