Based on Experiment 1, the relationship between the angle of the pipe and the velocity of flow:
F. Is indirect.
G. Is direct.
H. Varies, but with no general trend.
J. Cannot be determined.

Experiment 1
In Experiment 1, students began with a pipe of diameter 0.25 inches. The pipe was set first at a 15° angle and tap water was released steadily from the tank into the pipe. The velocity of flow (V) was measured. The pipe was then set at a 30° angle, a 45°  angle, and a 60° angle, water was released steadily from the tank into the pipe, and the velocity of flow was measured. The process was then repeated for each diameter of pipe using the same amount of water each time. All data were recorded in Table 1. Temperature of the water was held constant at 20°C.

Transcribed Image Text:

D (in) 0.25 0.50 0.75 1.00 Angle of pipe 15⁰ 30° 45° 60° 15⁰ 30° 45⁰ 60° 15⁰ 30° 45° 60° 15⁰ 30° 45° Table 1 60° V(ft/s) 2.0 4.0 6.5 8.0 5.0 9.0 12.5 15.0 8.0 12.5 16.0 20.0 10.5 15.0 18.5 25.0