Long board to be balanced horizontally
Question: A boy of mass 40 kg wishes to play on pivoted seesaw with his dog of mass 15 kg. When the dog sits at 3 m from the pivot, where must the boy sit if the 6.5 me long board is to be balanced horizontally?
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The probability of successfully rehabilitating a convicted criminal in a penal institution is 0.40 . A random sample of 3 convicted criminals is selected from the institution. A ssume that the behavior of each person does not depend on that of ot
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