In the lighthouse model A) the star literally turns on and off ...

[CharlieWard]

In the lighthouse model
 
  A) the star literally turns on and off like a lighthouse beacon.
  B) all pulsars must have their poles pointed directly toward us.
  C) if the beam sweeps across us, we will detect a pulse of radiation.
  D) the period of pulsation must speed up as the neutron star continues collapsing.
  E) the period of pulsation slows down due to the drag of the remnant on its field.

Question 2

In which direction does a quarter Moon rise?
 
  A) north
  B) south
  C) east
  D) west
  E) The Moon becomes a quarter Moon only after it has risen and changed phase.

[Sophiapenny]

Answer to Question 1

C

Answer to Question 2

C

[CharlieWard]

Thanks

[Sophiapenny]

Welcome