In experiments testing the cocktail party effect, most participants were unable to do any of the following except a. detect when the speaker’s voice changed from male to female b. identify any phrase associated with the unattended information c. detect when the unattended language was changed to german d. notice specific changes when the unattended speech was played backward

Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?