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Physics
Multiple Choice Question with Only One Choice Correct A satellite is moving around the earth in a stable circular orbit. Which one of the following statements will be wrong for such a satellite? (a) It is moving at a constant speed. (b) Its angular momentum remains constant. (c) It is acted upon by a force directed away from the centre of the earth which counter-balances the gravitational pull of the earth. (d) It behaves as if it were as freely falling body.
Chemistry
True or False : Bohr theory can be successfully modified to explain the electronic spectrum of multielectron atom.
Mathematics
Let A = 2i + k, B = i + j + k and C= 4i - 3j + 7k. Determine a vector R satisfying R x B = C x B and R . A = 0