____ has a negative charge and a mass about 1800 times small than ...

[Davideckstein7]

____ has a negative charge and a mass about 1800 times small than a proton.
 
  a. A neutron
  b. An electron
  c. A molecule
  d. A nucleus
  e. An isotope

Question 2

If the inner accretion disk around a black hole has a temperature of 106 K, at what wavelength will it radiate the most energy? Hint: wavelength in nm =3,000,000/T in K
 
  a. 106 nm
  b. 3 nm
  c. 3 x 106 nm
  d. 1 nm
  e. 3 x 1011 nm

[gasdhashg]

Answer to Question 1

B

Answer to Question 2

B

[Davideckstein7]

Excellent

[ttt030911]

Thanks for the timely response, appreciate it