Science, Maths & Technology
Electromagnetism: testing Coulomb’s law
...Writing multiline equation line 1 bold cap f equals cap f times cap f hat comma Equation label: (3) neatly splits a vector into a product of two terms: cap f gives the magnitude of the vector cap f hat gives its direction in space. The units of bold cap f are contained in the magnitude, cap f . Any unit vector is dimensionless and has magnitude 1; not 1 newton or 1 of...