Useful constants:  k=9.00×109 N.m2/C2  ε0= 8.85×10-12 C2/N.m2  µ0=4π×10-7 T.m/A  mp=1.67×10-27 kg  me=9.11×10-31 kg  e=1.6×10-19 C  g=1

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Q: review question below

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Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.