An insect can walk on water. It has four feet and the total length of the air-water interface of each foot has been estimated to be( 1 mm). Assuming that the contact angle between the foot and water is sufficiently large so that the surface tension (o = 72.8x10-3 N/m) acts vertically. The surface tension force for all feet of the insect is 291.2 x10-6 N O 436.8x10-6 N 245x10-6 N O
An insect can walk on water. It has four feet and the total length of the air-water interface of each foot has been estimated to be( 1 mm). Assuming that the contact angle between the foot and water is sufficiently large so that the surface tension (o = 72.8x10-3 N/m) acts vertically. The surface tension force for all feet of the insect is 291.2 x10-6 N O 436.8x10-6 N 245x10-6 N O
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Transcribed Image Text:An insect can walk on water. It
has four feet and the total
length of the air-water interface
of each foot has been estimated
to be( 1 mm). Assuming that the
contact angle between the foot
and water is sufficiently large so
that the surface tension (o =
72.8x10-3 N/m) acts vertically.
The surface tension force for all
* feet of the insect is
291.2 x10-6 N O
436.8x10-6 N
245x10-6 N O
The low pressure of blood is (60
to 10) mm hg. This value in
=Pascal
789.48 -1,315.8
10,526-15,789 O
789.48-13,158 O
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