Properties Of Solids And Liquids Question 210
Question: Water is moving with a speed of 5.18 ms?1 through a pipe with a cross-sectional area of 4.20 cm2. The water gradually descends 9.66 m as the pipe increase in area to 7.60 cm2. The speed of flow at the lower level is
Options:
A)3.0 ms?1
B)5.7 ms?1
C)3.82 ms?1
D)2.86 ms?1
Show Answer
Answer:
Correct Answer: D
Solution:
$ a _{1}v _{1}=a _{2}v _{2} $
therefore $ 4.20\times 5.18=7.60\times v _{2}\Rightarrow v _{2}=2.86\ m/s $
