Which of these physical processes is responsible for the propagation of an electromagnetic wave? 1. The generation of an electric field due to a change in magnetic flux. 2. The generation of a magnetic field due to a change in electric flux. 3. The superposition (vector addition) of the electric field and the magnetic field.

In the derivation of rrkm theory, a factor of 1/2 is introduced when equalizing the rates of formation and decomposition of activated complex as keal-hr) = ko this is clearly against the assumption of transition state theory that states all the activated complex in the transition state iss going to the product. find the reason why this factor is introduced here.