In the Milky Way galaxy, gas and dust are found:
A) in molecular clouds.
B) everywhere.
C) in neutral hydrogen clouds.
D) in dark nebulae.
E) in emission nebulae.
B
You might also like to view...
The close-packed planes in a FCC metal are the ______________ family of planes.
Fill in the blank(s) with the appropriate word(s).
An iron core in a transformer
A) guides magnetic field lines. B) shields unwanted external electric or magnetic fields. C) separates the primary and secondary regions. D) reduces energy losses.
When you shake an apple to and fro, you're shaking
A) energy. B) nothing. C) the universe.
A beam of light with a frequency range of 3.01 × 1014 Hz - 6.10 × 1014 Hz is incident on a metal surface. If the work function of the metal surface is 2.20 eV,
what is the range of frequencies in this beam of light that will be responsible for ejecting electrons from this metal surface? A) 1.12 × 1014 Hz - 5.31 × 1014 Hz B) 1.12 × 1014 Hz - 3.10 × 1014 Hz C) 3.01 × 1014 Hz - 6.10 × 1014 Hz D) 5.31 × 1014 Hz - 6.10 × 1014 Hz E) None