13.2 Soapy water has a surface tension of 0.025 N m-. A small bubble initially of radius r¡ = 2 mm is formed. The air pressure in the vicinity of the bubble is 100 kPa. (a) What is the gauge pressure inside the bubble AP ? The bubble expands to a radius of 12 = 4 mm. (b) What is the gauge pressure inside the bubble now AP2? (c) what is the ratio of the gauge pres- sures AP2

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13.2 Soapy water has a surface tension
of 0.025 N m-l. A small bubble initially
of radius r = 2 mm is formed. The air
pressure in the vicinity of the bubble is
100 kPa.
(a) What is the gauge pressure inside
the bubble AP{?
The bubble expands to a radius of
r2 = 4 mm.
(b) What is the gauge pressure inside
the bubble now AP2?
(c) what is the ratio of the gauge pres-
APL?
sures
ΔΡ
(d) Whatis the ratio of the bubble diam-
eters
r2
Transcribed Image Text:13.2 Soapy water has a surface tension of 0.025 N m-l. A small bubble initially of radius r = 2 mm is formed. The air pressure in the vicinity of the bubble is 100 kPa. (a) What is the gauge pressure inside the bubble AP{? The bubble expands to a radius of r2 = 4 mm. (b) What is the gauge pressure inside the bubble now AP2? (c) what is the ratio of the gauge pres- APL? sures ΔΡ (d) Whatis the ratio of the bubble diam- eters r2
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