which condition is essential for the formation of a standing wave?

half a wavelength must fit exactly into the length of a vibrating cord.

there must be constructive interference that doubles the amplitude of the wave.

there must be twice as many nodes as antinodes.

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

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.

The energy equivalent of the rest mass of an electron is