ncert solution for class 9th science chapter 9
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Vertebrata is divided into two superclasses, viz. Pisces and Tetrapoda. Animals of Pisces have streamlined body with fins and tails to assist in swimming. Animals of Tetrapoda have four limbs for locomotion.
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using a horizontal force of 200NS we intend to move a wooden cabinet across a floor at a constant velocity what is the friction force that will be accepted on the cabinet
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