If surface tension of water is 70 dyn `cm^-1`, what is its value in S.I.?

Surface tension of water is 0.072 Nm^-1 . The excess pressure inside a water drop of diameter 1.2 mm is

What is the value of R in S.I. units ?

The value of 'G' on the surface of earth is 6.67xx 10^- 11 Nm^2//kg^2 . What is its value on the surface of moon ?

What is Boltzmann constant. What is its value in SI units?

A glass plate of length 10 cm, breadth 4 cm and thickness 0.4 cm weighs 40 g in air. If it is held vertically with long side horizontal and the plate half immersed in water, what will be its apparent weight? Surface tension of water = 70 dyne cm^-1 .

What is stress ? Give its S.I. Unit.

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 ) .

Curved surface area of a cone is 308 cm^2 and its slant height is 14 cm. Find (i) radius of the base and (ii) total surface area of the cone. Assume pi = 22/7 , unless stated otherwise.