Mechanical Prop...

The lower end of a glass capillary tube is dipped in water. Water rises to a height of 8 cm. The angle of contact is $${ 0 }^{ \circ  }$$. the tube is then broken at a height of 6 cm. The height of water column and angle of contact will be.

A steel ball of density 7800 kg/$${ m }^{ 3 }$$ falls through water of density 1000 kg/$${ m }^{ 3 }$$ and coefficient of viscosity 0.01 poise. Find its terminal velocity (approx) if the radius is 1 cm.  

Vessel shown in the figure has two sections of areas of cross section $$A{}_{1}$$ and $${A}_{2}$$. A liquid of density $$\rho$$ fills both sections up to a height $$h$$ in each. Neglect atmospheirc pressure 

Write true or false. Correct the false statements.

If pressure at half the depth of a lake is equal to $$\cfrac {2}{3}$$ pressure at the  bottom of the lake then what is the depth of the lake $$[RPET=2000]$$

The angle of contact for the pair of pure water with clean glass is

The angle of contact between glass and mercury is :

Radius of a soap bubble is $$r$$, surface tension of soap solution is $$T$$. Then without increasing the temperature, how much energy will be needed to double its radius.

By sucking through a straw, a student can reduce the pressure in his lungs to 750 mm of Hg (density $$13.6 gcm^{-3}$$) using the straw, he can drink water from a glass up to a maximum depth of 

Anomalous expansion of water is demonstrated by using