The Bernauli's Theorem is based on the conservation of:

Two small drops of mercury, each of radius R, coalesce to form a single large drop. The ratio of the total surface energies before and after the change is:

For a ball falling in a liquid with constant velocity, ratio of resistance force due to the liquid to that due to gravity is

Application of Bernaull's Theorem can be seen in

At which of the following temperature, the value of surface tension of water is minimum?

If a wet piece of wood burns, then water droplets appear on the other end, why?

Why, surface tension of all lubricating oils and paint is kept low? 

It becomes easier to spray the water in which some soap is dissolved, explain it.

Find the work done in increasing the radius of a soap bubble from 4 cm to 6 cm .The value of surface tension for the soap solution os 30 dyne cm^-1 

Find the work done required to make a soap bubble of radius 0.02 m. Given surface tension of soap 0.03 N/m

The surface tension and vapour pressure of water at 20⁰C is 7.28\(\times\)10^-2 N/m and 2.33\(\times\)10³ Pa, respectively. What is the radius of the smallest spherical water droplet which can from without evaporating at 20⁰C?

A liquid drop of radius 4mm breaks into 1000 identical drops. Find the change in surface energy. S=0.07Nm^-1

For the model of a plane in a wind tunnel, turbulence occurs at a ... speed for turbulence for an actual plane (greater / smaller)

(a) How do trees draw water from the ground?
(b) The radius of a capillary tube is doubled. What change will take place in the height of the capillary rise?
(c) In a capillary tube water descends and not rises. Guess the material of the capillary tube.

Hydrostatic pressure is a scalar quantity even though pressure is force divided by area.

A cylindrical vessel filled with water upto a height of 2 m stands on a horizontal plane. The side wall of the vessel has a plugged circular hole touching the bottom. Find the minimum diameter of the hole so that the vessel begin to move on the floor, if the plug is removed. The coefficient of friction between the bottom of the
vessel and the plane is 0.4 and total mass of water plus vessel is 100 kg.

On what factors does the critical velocity of the liquid depend?

A hole of area 4 cm² is formed in the side of a ship 2.4 m below the water level. What minimum force is required to hold on a patch covering the hole from the inside of the ship? Given that density of sea water = 1.03 x 10³ kg m^-3.

At a depth 1000m in an ocean
What is the gauge pressure?

What is the pressure inside the drop of mercury of radius 3.00mm at room temperature? Surface tension of mercury at that temperature (20⁰C) is 4.65 \(\times\) 10^-1 N/m. The atmospheric pressure is 1.01\(\times\)10⁵ Pa. Also, give the excess pressure inside the drop.

Water flows through a horizontal pipe whose internal diameter is 2.0 cm , at speed of 1.0 ms^-1 . What should be the diameter of the nozzle, if the water is to emerge at a speed of 4.0 ms^-1 ?

State law of floatation.
Compute the volume in m³ of a life preserver of SG 0.20, which, when worn by a boy.weighing 60 kg and having SG equal to 0.9, will just support him, if 3/4 of his body is submerged in fresh water of density 1000 kg m^-3. Assume that the life preserver is completely submerged.