The surface tension of soap water at 20C is s = 0.025 N/m. The gage pressure

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The surface tension of soap water at 20°C is σs = 0.025 N/m. The gage pressure inside a soap bubble of diameter 2 cm at 20°C is

(a) 10 Pa 

(b) 5 Pa 

(c) 20 Pa 

(d) 40 Pa 

(e) 0.5 Pa

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