A glass disk G is held tightly against the end of a vertically held cylindrical tube C while the tube is lowered 20 cm under the water (Fig. 9.31). What is the maximum thickness the disk can have and not fall away from the cylinder? (Hint: The density of the glass is p = 25 x 10' kg/m'.) Water 20 cm G.

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Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.5P: Evaluate the dimensionless groups hcD/k,UD/, and cp/k for water, n-butyl alcohol, mercury, hydrogen,...
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9.27 A glass disk G is held tightly against the end of a
vertically held cylindrical tube C while the tube is
lowered 20 cm under the water (Fig. 9.31). What is
the maximum thickness the disk can have and not
fall away from the cylinder? (Hint The density of the
glass is p = 2.5 x 10' kg/m'.)
%3D
Water
20 cm
G.
Transcribed Image Text:9.27 A glass disk G is held tightly against the end of a vertically held cylindrical tube C while the tube is lowered 20 cm under the water (Fig. 9.31). What is the maximum thickness the disk can have and not fall away from the cylinder? (Hint The density of the glass is p = 2.5 x 10' kg/m'.) %3D Water 20 cm G.
Expert Solution
Step 1

Given data

Tube is lowered 20 cm under water

Glass disk of density 2500 kg/m3

radius of disk and cylinder = r

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