Water rises against gravity to a greater amount in a small diameter tube than in
ID: 203513 • Letter: W
Question
Water rises against gravity to a greater amount in a small diameter tube than in a large diameter tube of the same material. This phenomenon is explained by the fact that the negative pressure that is produced at the air-water surface is inversely proportional to the radius of curvature of the meniscus. (1 point) w, -2T/r, where T is the surface tension and r is the radius of the curvature For 3 tubes a, b, and c with radii as 1mm, 2 mm and 2.5 mm respectively, rank them depending on the water potential produced from highest to lowest. Keep the value of T same for 3 tubes 3tube b with radius 2 mm 2 tube a with radius 1 mm 1tube c with radius 2.5 mm Consider that the pressure is already negative. Did you make that negative twice when you ranked? There is NOT a lot of math involved. Keep the value of T same for all 3 tubes. Refer to the slides for a further clue.Explanation / Answer
They are ranked in the following manner:
Tube with radius 2mm = 2
tube with radius 1mm = 1
Tube with radius 2.5mm = 3
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