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[" 19.Two small drops of mercury,each of...

[" 19.Two small drops of mercury,each of radius R "],[" coalesce to form a single large drop.The ratio of the "],[" total surface energies before and after the change is: "],[[" (1) "1:2^(1/3)," (2) "2^(1/3)," : "1," (3) "2:1]]

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