Awave has a speed of 351 m/s and a wavelengths of 2.400 meters what is the period

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.

Ineed the answer to question 1 , i’m desperate

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?