Problem 1: Water flows through a pipe of varying cross-section.
Its speed is 50 cm/s where the cross-section is 100 cm2. What will be the
speed where the cross-section is 25 cm??
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Volume of water flowing per second=R
=
60 /15
=0.25m3/sec
R=Av
A=R/v
A=0.25/3
A= 1/12m2
Area of the cross section is 1/12m2
=0.162m
=16.2cm
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