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Two drops of equal radius are falling through air with
P a steady velocity of \( 5 \mathrm{~cm} / \mathrm{s} \). If the two drops coalesce,

W then its terminal velocity will be:
(1) \( 4^{1 / 3} \times 5 \mathrm{~cm} / \mathrm{s} \)
(2) \( 4^{1 / 3} \mathrm{~cm} / \mathrm{s} \)
(3) \( 5^{1 / 3} \times 4 \mathrm{~cm} / \mathrm{s} \)
(4) \( 4^{2 / 3} \times 5 \mathrm{~cm} / \mathrm{s} \)
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