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CBSE Class 9 Answered

1.   How many litres of water flow out through a pipe having an area of cross section of 5cm2 of in one minute if the speed  of water in the pipe is 30 cm/sec.
Asked by M.s.srinidhi21 | 04 Mar, 2015, 06:09: PM
answered-by-expert Expert Answer

begin mathsize 16px style A r e a space o f space c r o s s space s e c t i o n space o f space p i p e space equals space 5 space c m squared S p e e d space o f space w a t e r space f l o w i n g space i n t o space p i p e space equals space 30 space c m divided by s e c V o l u m e space o f space t h e space w a t e r space f l o w i n g space o u t space o f space t h e space p i p e space i n space o n e space s e c o n d equals A r e a space o f space c r o s s space s e c t i o n space cross times 30 space c m therefore V o l u m e space o f space t h e space w a t e r space f l o w i n g space o u t space o f space t h e space p i p e space i n space o n e space s e c o n d equals 5 space c m squared space cross times 30 space c m equals 150 space c m cubed V o l u m e space o f space w a t e r space f l o w i n g space o u t space o f space p i p e space i n space o n e space m i n u t e equals 60 cross times 150 space c m cubed equals 9000 c m cubed equals 9000 over 1000 l i t r e equals 9 l i t r e s end style

Answered by | 04 Mar, 2015, 06:17: PM

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