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Physics
Problem
Water flows steadily through a horizontal pipe that narrows so that its radius becomes one–half of its initial value. If the speed of water before the narrowing is
v
v
v
, what is its speed after the pipe narrows? a)
2
v
2v
2
v
b)
v
2
\dfrac{v}{2}
2
v
c)
4
v
4v
4
v
d)
v
4
\dfrac{v}{4}
4
v
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