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  1. Under the action of a force F=cx, the position of a body changes from 0 to x.The work done
  2. Number of electrons in one mC charge, given e=1.6×10⁻¹⁹ C, will be
  3. If R is the radius of earth, the height at which the weight of a body 1/4 of its weight
  4. The distance travelled by an object along a straight line in time t is given by
  5. An atom bomb weighing 1 kg explodes releasing 9×10¹³ J of energy.