In the electron-wave model of the atom, an electron in the second ...

[j.rubin]

In the electron-wave model of the atom, an electron in the second energy level contains
 
  A) a single wavelength.
  B) two wavelengths.
  C) any number of wavelengths.
  D) none of the above

Question 2

Betelgeuse is a star in the constellation Orion. It radiates heat at the rate of 3.00  1030 W and has a surface temperature of 3000 K.
 
  Assuming that it is a perfect emitter, what is the radius of Betelgeuse? The Stefan-Boltzmann constant is 5.67 x 10-8 W/(m2K4).
  A) 7.80  1010 m
  B) 8.70  1010 m
  C) 1.40  1011 m
  D) 1.90  1011 m
  E) 2.30  1011 m

[jessicaduplan]

Answer to Question 1

Answer: B

Answer to Question 2

E