Question

water 7.2 x 10' N/m.
nsion of
TAns. 7200 N/m
"N]
to
tha
op
the
20. Twenty seven droplets of water, cach
of radius 0.1 mm coalesce into a single
drop. Find the change in surface energy
Surface tension of water is 0.072 N/m.
[Ans. 1628 x 10')
21. A drop of mercury of radius 0.2 cm is
broken into 8 droplets of the same size
Find the work done if the surface tension
of mercury is 435.5 dyne/cm.
1
ra
ic
10​

Answer 1

Answer:

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