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Author Question: A post-1982 penny is made with zinc, but its density is actually greater than that of zinc because ... (Read 209 times)

RYAN BANYAN

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on: Aug 27, 2018
A post-1982 penny is made with zinc, but its density is actually greater than that of zinc because ________.
 
  A) it is coated with a thin layer of copper, which is more dense than zinc
  B) it is compressed to a smaller volume in the manufacturing process
  C) it has more mass for the same volume
  D) Both A and C are correct

Question 2

Which of the following is not one of the main classes of psychoactive drugs?
 
  A) narcotics
  B) stimulants
  C) depressants
  D) hallucinogens
  E) All of the above are classes of psychoactive drugs.


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hollysheppard095

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

D

Answer to Question 2

A


RYAN BANYAN

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Reply 2 on: Aug 27, 2018
Excellent

jackie

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Reply 3 on: Yesterday
Gracias!

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