At two points on a horizontal tube of varying cross section carrying water the radii are 1cm and 0.4cm . The pressure difference between these points is 4.9cm of water . How much liquid flows through the tube per second?

Dear Student,

from bernoulli theorem ,g=980cm/s2let velocity be v and v'Av=A'v'v=0.16v'-v2+v'2=4.9g4.9g=0.9744v'2v'=70.2 cm/srate of flow=0.16*70.2=11.23 cm3/sRegards

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