The power required for the flow would be

Question

 A pipe of 20 cmm diameter and 30 km length transports oil form a tanker to the shore with a velocity of 0.318 m/s. the flow is laminar. If m=0.1 N- m/s², the power required for the flow would be

(a)9.25 kW                  (b)8.36 kW

(c)7.63 kW                   (d) 10.13 kw