When the water is swirling, why does it take the shape of a funnel with a depression in the centre?
L. Srihari, Bengaluru
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N. Nikhita,
In motor bikes why do we use two separate disc brake controls for front and back instead of one pedal as in a car for all the four wheels?
Abhinav Narasimhan,
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Clouds contain tiny water drops which are heavier than air. Then how do they remain suspended and do not fall at once?
S.P.S. Jain, Greater Noida, Uttar Pradesh