A U-tube contains water and methylated spirit separated by mercury. The mercury columns in the two arms are in level with 10.0 cm of water in one arm and 12.5 cm of spirit in the other. What is the specific gravity of spirit?

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 smallhinged 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 metre stick is balanced on a knife edge at its centre. When two coins, each of masb 5 g are put one on top of the other at the 12.0 cm mark, the stick is found to be balanced at 45.0 cm. What is the mass of the metre stick?

Water rises in a capillary tube to a height 2cm. In another capillary tube whose radius is one third of it, how much the water will rise? If the first capillary tube is inclined at an angle 60^0 with the vertical, then what will be the position of water in the tube?

The cylindrical tube of a spray pump has a cross-section of 8.0 cm2 one end of which has 40 fine holes each of diameter 1.0 mm. If the liquid flow inside the tube is 1.5 m min-^1 , what is the speed of ejection of the liquid through the holes?

A glass container of volumn 200cm^3 is full of mercury at 20°C .the temperature is raised to 100°C.Find how much mercury will be going out of the container.Given that cubical expansion of glass gamma_g=12*10^-5/°C ,cubical expansion Hg gamma_g=18*10^-4/°C .

Water flows through a pipe of varying cross-section. If the velocity of flow is 0.24 m/s at a cross- section of 5 cm^2 , what will beits velocity at a cross-section of 10 cm^2 ?