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下雨是日常生活中经常见到的一种自然现象,雨滴有大有小,那么,它们是否具有相同的下落速度呢? 雨滴在空气中运动时受到的阻力f如下:
Rain is a natural phenomenon that is often seen in daily life. Raindrops are of large or small size. So, do they have the same drop speed? The resistance of raindrops when they move in the air is as follows: