क्या होगा अगर आप पृथ्वी के आर पार सुरंग में कूद जाएं तो? (Hollow Earth)

If you want to travel from one side to another side of the Earth A jet plane will take around

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Is Racewalking a Sport?

This has nothing to do with physics, but – Racewalking. Here are the rules: Walk so that one foot is

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