Express the speed of the electron in the bohr model in terms of the fundamental constants (me, e, h, e0), the nuclear charge z, and the quantum number n. evaluate the speed of an electron in the ground states of he1 ion and u911. compare these speeds with the speed of light c. as the speed of an object approaches the speed of light, relativistic effects become important. in which kinds of atoms do you expect relativistic effects to be greatest? slader

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.