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Two ships A and B are 10 km apart on a line running south to north. Ship A farther north is streaming west at 20 km/hr and ship B is streaming north at 20 km/hr. What is their distance of closest approach?
Updated Thu, 30 Aug 2018 03:35 pm


How to find melting point and boiling point among hydrocarbons
Updated Thu, 30 Aug 2018 03:32 pm