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a boy is about to cross over a rail way but unfortunately a 300m long train arrived and passed by him. how long does he need to wait to cross?
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Which radioisotope is used in dating geological formations?
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Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?
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a boy is about to cross over a rail way but unfortunately a 300m long train arrived and passed by hi...
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