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Author Question: What is the distinguishing characteristic of what we call ordinary matter (such as the matter that ... (Read 176 times)

newbem

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on: Jul 27, 2018
What is the distinguishing characteristic of what we call ordinary matter (such as the matter that makes up stars, planets, and people)?
 
  A) It is made of subatomic particles that scientists call WIMPs.
  B) It emits a great deal of light.
  C) It consists of atoms or ions with nuclei made from protons and neutrons.
  D) It can attract other matter through the force of gravity.

Question 2

Which of the following properties cannot be determined from a spectrum of a star?
 
  A) speed perpendicular to my line of sight B) surface temperature
  C) speed towards me or away from me D) chemical composition


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robbielu01

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

C

Answer to Question 2

A


newbem

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

dantucker

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Reply 3 on: Yesterday
Gracias!

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