0 degrees Kelvin is A) meaningless, a temperature outside the ...

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0 degrees Kelvin is
 
  A) meaningless, a temperature outside the range defined for the Kelvin scale.
  B) the temperature at which all particles transform into light.
  C) the temperature at which all particles move at the speed of light.
  D) the temperature at which all random particle motion stops.

Question 2

Why do flat disks form around young stars?
 
  A) They don't; the stars form from the disks.
  B) Centrifugal force pushes gas outward from the spinning gas cloud.
  C) Intense winds from nearby massive stars flatten the gas cloud.
  D) Collisions between rotating gas particles flatten the gas cloud along the axis of rotation.

[wilsonbho]

Answer to Question 1

D

Answer to Question 2

D

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Wow, this really help

[samiel-sayed]

Thanks for the timely response, appreciate it