A motorist is helping another motorist in a stranded car by siphoning gasoline from his automobile tank, as shown. The 1.5-m-long tube inner diameter is 0.7 cm and the friction coefficient is...

A motorist is helping another motorist in a stranded car by siphoning gasoline from his automobile tank, as shown. The 1.5-m-long tube inner diameter is 0.7 cm and the friction coefficient is estimated at f = 0.018.

(a) How long does it takes to siphon 2 liters of gasoline (assuming no effect on the fluid level in the tank and in the container)?

(b) Repeat the calculation but assuming no friction in the pipe. How realistic is this solution?