Author Question: One parsec is defined as the distance to a star when the star exhibits a parallax of what angle of ... (Read 47 times)

dalyningkenk · **on:** Jul 28, 2018

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