Paper 4, Section I, B

Dynamics and Relativity
Part IA, 2016

With the help of definitions or equations of your choice, determine the dimensions, in terms of mass (M)(M), length (L)(L), time (T)(T) and charge (Q)(Q), of the following quantities:

(i) force;

(ii) moment of a force (i.e. torque);

(iii) energy;

(iv) Newton's gravitational constant GG;

(v) electric field E\mathbf{E};

(vi) magnetic field B\mathbf{B};

(vii) the vacuum permittivity ϵ0\epsilon_{0}.