1. The Red Cedar River flows placidly through MSU's campus at a depth of 80 cm. A leaf is observed to travel about 1 m in 4 s. Decide if the flow is laminar or turbulent. Make any assumptions needed.
2. A drinking fountain has an opening of 4 mm in diameter. The water rises a distance of about 20 cm in the air. Is the flow laminar or turbulent as it leaves the opening? Make any assumptions needed.