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Author Question: The combined mass of all the asteroids in the asteroid belt is A) less than that of any ... (Read 143 times)

stephzh

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on: Jul 27, 2018
The combined mass of all the asteroids in the asteroid belt is
 
  A) less than that of any terrestrial planet.
  B) about the same as that of Earth.
  C) about twice that of Earth.
  D) about the same as that of Jupiter.
  E) more than that of all the planets combined.

Question 2

At what stage of evolution do T Tauri stars occur?
 
  A) just as the collapsing cloud becomes luminous
  B) when a protostar is on the verge of becoming a main sequence star
  C) just prior to the protostar stage
  D) just after the planetary nebula is expelled
  E) after the star has established itself as a main sequence star


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Koolkid240

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Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


stephzh

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Reply 2 on: Jul 27, 2018
:D TYSM

rachel

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Reply 3 on: Yesterday
Excellent

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