Question

a capillary tube having inner diameter 1 mm and the outer diameter 4 mm hangs vertically from one arm of the balance. if the lower end of the tube just touches a liquid of surface tension 3 × 10-2 n/m, assuming that the liquid wets the tube. find the downward force due to surface tension acting on the tube.(ans: f= 4.71 x 10-4 n) ​

Answer 1

Explanation:

A circular garden with radius 42 m is surrounded from

outside by a path of 3.5 m wide. Find the cost to pave the

stones on the path at the rate of Rs. 20 per m2.

Answer 2

Answer:

the surface tension of liquid, if a thin and light ring of a material of ... cm long hangs vertically in the water with one side just touching the water ... Hence, the effective length = 2 l = 2 × 4 × 10-2 m.