If the surface tension of a soap air interface is 0.09 N/m, the differ – McqOptions

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1.	If the surface tension of a soap air interface is 0.09 N/m, the difference between the internal and external pressure in the sap bubble of 3 cm diameter is
A.	22
B.	20
C.	24
D.	30
E.	36
Answer» D. 30

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