Mass can flow from one star in a binary system to its companion through the first ...

Mass can flow from one star in a binary system to its companion through the first ____________________ point.
 
  Fill in the blank(s) with correct word

Question 2

Which of the following cannot be determined from the spectrum of a star?
 
  a. chemical composition
  b. surface temperature
  c. radial (along line of sight) velocity
  d. tangential (perpendicular to line of sight) velocity
  e. Both c and d

Question 3

Electrons moving in a strong magnetic field emit ____________________ radiation.
 
  Fill in the blank(s) with correct word

Question 4

The sun has a surface temperature of approximately 5800 K. At what wavelength does the maximum energy radiated by the sun occur?
 
  a. 5800 nm
  b. 300 nm
  c. 174 nm
  d. 520 nm
  e. 3000 nm

Question 5

A(n) ____________________ is the expulsion of the outer layers of a moderate mass star that has a degenerate carbon and oxygen core.
 
  Fill in the blank(s) with correct word