Answers created by Subhrajit M.

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• Question #f777d
  
• Question #d1324
  
• Question #4cd6b
  
• Question #31b2f
  
• What are two ways in which radioisotopes have been used to help humans?
  
• 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 ?
  
• 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?
  
• Question #d6553
  
• How do you factor #3x^2 - 5x - 12#?
  
• Solve #sin x + cos x = sqrt2# ?
  
• Question #1bf5d
  
• What is the oxidation number of the metal in #MnO_4^(-)#, and how do we represent its reduction to #Mn^(2+)#?
  
• 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?