Two equal drops of water, each of radius \( r \) are falling throug...

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Two equal drops of water, each of radius \( r \) are falling through air with a steady speed of \( v \). If the two drops combine to form a big drop, then the steady speed of the new big drop will be
(1) \( 2 v \)
(2) \( 4 v \)
(3) \( 2^{\frac{1}{3}} v \)
(4) \( 2^{\frac{2}{3}} v \)
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