A piece of wood of relative density 0.25 floats in a pail containing oil of relative density 0.81 . What is the fraction of volume of the wool above the surface of the coil?

Iceberg floats in water with part of it submerged. What is the fraction of the volume of iceberg submerged if the density of ice is rho_1 = 0.971 g cm^-3 ?

What is the excess pressure inside a bubble of soap solution of radius 5.00 mm,given that the surface tension of soap solution at the temperature (20^@C) is 2.50xx 10 2 N in 1 ? If an air bubble of the same dimension were formed at depth of 40.0 cm inside a container containing the soap solution (of relative density 1.20), what would be the pressure inside the bubble ? (1 atmospheric pressure is 1.01xx 105 Pa).

A body of density rho floats with a volume V_1 of its total volume V immersed in one liquid of density rho_1 and with the remainder of volume V_2 immersed in antoher liquid of density rho_2 where rho_1> rho_2 . Find the relative volumes immersed int wo liquids.

A tank with a square base of area 1.0 m^2 is divided by a vertical partition in the middle. The bottom of the partition has a small-hinged door of area 20 cm^2 . The tank is filled with water in one compartment, and an acid (of relative density 1.7) in the other, both to a height of 4.0 m. compute the force necessary to keep the door close.

A uniformly charged conducting sphere of 2.4 m diameter has a surface charge density of 80.0 muC//m^2 - What is the total electric flux leaving the surface of the sphere?

A sample of 16 g charcoal was brought into contact with CH_(4) gas contained in a vessel of 1 litre at 27^(@) C . The pressure of gas was found to fall from 760 to 608 torr. The density of chacoal sample is 1.6 g//m^(3) . What is the volume of the CH_(4) gas adsorbed per gram of the adsorbent at 608 torr and 27^(@)C ? 125 L//g , 16.25 mL//g , 26 mL//g , none of these .

What torque acts ona 40 turn coil of 100 cm^2 area carrying a current of 10 ampere held with its axis at right angle to magnetic field of flux density 0.2 tesla and plane of the coil parallel to the field?

Two narrow bores of diameters 3.0 mm and 6.0 mm are joined together to form a U-tube open at both ends. If the U-tube contains water, what is the difference in its levels in the two limbs of the tube ? Surface tension of water at the temperature of the experiment is 7.3xx 10^-2 N m^-1 '. Take the angle of contact to be zero and density of water to be 1.0xx 10^3 kg m^- 3 ( g = 9.8 m s^-2 ) .

A copper ball of density 8.6 g cm^-3 cm in diameter is immersed in oil of density 0.8 g cm^-3 . If the ball remains suspended in oil in a uniform electric field of intensity 36,000 NC^-1 acting in upward direction, what is the charge on the ball?