What was discovered in atomic spectra by physics pioneers Balmer, ...

[Yi-Chen]

What was discovered in atomic spectra by physics pioneers Balmer, Rydberg, and Ritz?
 
  A) unexplained randomness
  B) mathematical order
  C) all atoms are about the same size
  D) electrons occupy well-defined shells about the atomic nucleus
  E) electrons behave as standing waves

Question 2

The magnetic field at a certain distance from a wire carrying 2-A current is 4 T. What will be the magnetic field if the current in the wire is doubled?
 
  A) 2 T
  B) 4 T
  C) 6 T
  D) 8 T
  E) 10 T

[ttt030911]

Answer to Question 1

Answer: B

Answer to Question 2

D