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| 1. |
729 small spherical water drops, each of radius 1 mm, combine to form a spherical big drop. The decrease in surface energy is about (Take surface tension of water = 6 × 10–2 N/m) |
| Answer» 729 small spherical water drops, each of radius 1 mm, combine to form a spherical big drop. The decrease in surface energy is about (Take surface tension of water = 6 × 10–2 N/m) | |