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Author Question: The vertical columns of the periodic table are referred to as a) periods. b) groups. c) ... (Read 38 times)

mpobi80

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on: Jul 28, 2018
The vertical columns of the periodic table are
  referred to as
  a) periods.
  b) groups.
  c) fullerenes.
  d) lines.

Question 2

A 3.0-kg object moving 8.0 m/s in the positive x direction has a one-dimensional elastic collision with an object (mass = M) initially at rest. After the collision the object of unknown mass has a velocity of 6.0 m/s in the positive x direction. What is M?
 a. 7.5 kg
  b. 5.0 kg
  c. 6.0 kg
  d. 4.2 kg
  e. 8.0 kg


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steff9894

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Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

b


mpobi80

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

cici

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Reply 3 on: Yesterday
:D TYSM

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