Which of the following comprise the oldest members of the Milky Way?
A) the Sun and other solar mass stars
B) O stars
C) red giant stars in spiral arms
D) Cepheid variables
E) globular clusters
E
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A beam of electrons can be deflected by a
A) magnetic field. B) electric field. C) both of these D) neither of these
If we place living cells in a nonpolar solvent like methane or ethane,
A) their membranes will thicken, preventing molecular transport across the membrane B) they will rapidly explode due to pressure caused by the solvent building up inside the cell C) their membranes will most likely dissolve as cell membranes are also nonpolar D) they will function in much the same way as they do in water
The Cassini Division is a gap in Saturn's rings caused by
A) Saturn's magnetic field. B) two shepherding moons. C) Saturn's excess heat. D) gravitational interaction with Mimas. E) the icy ring particles melting.
Describe the process of precession
What will be an ideal response?