Yahoo Answers: Answers and Comments for Physics Help Plx (plz provide answer and not formula) THX!!!!? [Physics]
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From Apec Gaming
enUS
Sun, 15 Sep 2019 21:26:48 +0000
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Yahoo Answers: Answers and Comments for Physics Help Plx (plz provide answer and not formula) THX!!!!? [Physics]
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https://answers.yahoo.com/question/index?qid=20190915212648AAq52tt
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From JOHN: Every second the same quantity of fluid must p...
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Sun, 15 Sep 2019 22:08:06 +0000
Every second the same quantity of fluid must pass through every crosssection of the pipe.
Let u =4.0m/s, v, w be the fluid velocities in the 1cm, 2cm and 0.5cm sections of the pipe.
In 1s π(1/2)² x 400cm³ passes any 1cm diameter crosssection. For the 2cm section this is π(2/2)²v = π(1/2)² x 400, giving v = 100cm/s = 1m/s.
For the 0.5cm section this is π(0.5/2)²w = π(1/2)² x 400, giving w = 1600cm/s = 16m/s.

From Vaman: we must use r^2 v= constant. r is the radius a...
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Sun, 15 Sep 2019 21:42:48 +0000
we must use r^2 v= constant. r is the radius and v is the velocity.
first condition gives 1/4*4=1. This remains a constant. In the second segment r=1. velocity =1 m/s. In the third segment (1/4)^2 v=1.
v=16 m/s. In the first segment it is 4 m/s, in the second it is 1 m/s, in the third it is 16 m/s.

From csungrad piano: ????????????????
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Sun, 15 Sep 2019 21:28:18 +0000
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