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Author Question: Which element makes up the largest percentage by mass in the human body? a) oxygen b) carbon c) ... (Read 75 times)

kshipps

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on: Jul 28, 2018
Which element makes up the largest percentage
  by mass in the human body?
  a) oxygen
  b) carbon
  c) nitrogen
  d) iron

Question 2

A 3.0-kg object moving in the positive x direction has a one-dimensional elastic collision with a 5.0-kg object initially at rest. After the collision the 5.0-kg object has a velocity of 6.0 m/s in the positive x direction. What was the initial speed of the 3.0 kg object?
 a. 6.0 m/s
  b. 7.0 m/s
  c. 4.5 m/s
  d. 8.0 m/s
  e. 5.5 m/s


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wtf444

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

a

Answer to Question 2

d


kshipps

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Reply #2 on: Jul 28, 2018
TY


wtf444

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Reply #3 on: Jul 28, 2018
You're welcome


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