soap bubble contains two surface layers. What is the excess pressure just inside the first layer when seen from outside the bubble? a) 2S/R b) 4S/R c) -2S/R d) -4S/R
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soap bubble contains two surface layers. What is the excess pressure just inside the first layer when seen from outside the bubble?
a) 2S/R
b) 4S/R
c) -2S/R
d) -4S/R
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