Answers edited by Subhrajit M.
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A model train with a mass of 4 kg is moving along a track at 6 (cm)/s. If the curvature of the track changes from a radius of 32 cm to 48 cm, by how much must the centripetal force applied by the tracks change?
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If a,b,c are in GP and a + x , b + x, c + x are in HP. Find x where a,b,c are distinct numbers?
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A balloon is flying up with a velocity of 5 m/s. at a height of 100 m a stone is dropped from it . at the instant the stone reaches the ground level the height of balloon will be ?
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What is the oxidation number of the metal in MnO_4^(-), and how do we represent its reduction to Mn^(2+)?