Question

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Answer 1

2mm²=2*10^-6 m²

Rate of flow of water=area of cross section *height of the water column

=2*10^-6*2*10

=40*10^-6m³/s

Answer 2

Answer:

$\underline{\bold{12.6 \times 10^{-6} m^3/s}}$

Explanation:

Rate of flow of liquid,

$Q = au = a\sqrt{2gh}\\= 2 \times 10^{-6}m^2 \times \sqrt{2 \times 10 \times 2}m/s\\= 2 \times 2 \times 3.14 \times 10^{-6}m^3/s\\= 12.56 \times 10^{-6}m^3/s\\= 12.6 \times 10^{-6}m^3/s$