Author Question: The kinetic energy of an electron in a Bohr orbit of the hydrogen atom is 8.57 10-20 J. What is the ... (Read 104 times)

jace · **on:** Jul 29, 2018

The kinetic energy of an electron in a Bohr orbit of the hydrogen atom is 8.57 10-20 J. What is the radius of the orbit?

A) 1.35 10-9 m
B) 2.01 10-9 m
C) 2.64 10-9 m
D) 4.12 10-9 m
E) 5.29 10-11 m

Question 2

The focal length of the objective of a telescope is much longer than the focal length of the eyepiece.

Indicate whether the statement is true or false