A district mine ventilated by 30 m3/sec. Quantity of air and the wg in district is 25 mm. Find the resistance of the district.
A. $$\frac{1}{{16}}{\text{Ku}}$$
B. $$\frac{1}{{36}}{\text{Ku}}$$
C. $$\frac{1}{6}{\text{Ku}}$$
D. $$\frac{1}{{38}}{\text{Ku}}$$
Answer: Option B
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