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Author Question: One currently-used practical application of antimatter is in A) positron emission tomography ... (Read 52 times)

mia

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on: Jul 29, 2018
One currently-used practical application of antimatter is in
 
  A) positron emission tomography (PET) scans of the brain.
  B) a popular breakfast cereal made of antimatter.
  C) the discovery of small cracks in metallic machinery such as airplane wings.
  D) nuclear magnetic resonance (NMR) medical diagnosis.
  E) propulsion of space vehicles.

Question 2

A ball is thrown horizontally from the top of a tower at the same instant that a stone is dropped vertically. Which object is traveling faster when it hits the level ground below if we neglect air?
 
  A) It is impossible to tell because we do not know their masses.
  B) the stone
  C) the ball
  D) Both are traveling at the same speed.


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peter

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


mia

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

6ana001

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Reply 3 on: Yesterday
:D TYSM

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