One parsec is defined as the distance to a star when the star ...

[dalyningkenk]

One parsec is defined as the distance to a star when the star exhibits a parallax of what angle of arc?
 a. One degree
  b. One second
  c. One millimeter
  d. One minute

Question 2

If the energy of n = 6 is 0.378 eV and that of n = 5 is 0.544 eV in a hydrogen atom, a transition from n = 6 to n = 5 will _______________ a photon with an energy of approximately ______________.
 a. absorb; 0.922 eV
  b. emit; 0.166 eV
  c. absorb; 0.166 eV
  d. emit; 0.922 eV

[rekilledagain]

Answer to Question 1

b

Answer to Question 2

b

[dalyningkenk]

Wow, this really help

[chereeb]

Thanks for the timely response, appreciate it