An electron is incident upon a potential barrier of 30 eV height and a thickness of 1.0nm. Find the lowest incident kinetic energy greater than 30 eV for which the transmissionprobability is unity (no reflected wave). Now suppose that instead of a barrier there is a30 eV dip of the same width. Find the lowest incident kinetic energy greater than zero forwhich the transmission probability is unity.

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.