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Author Question: Is it good or bad that many materials must be imported to run the economy of any country? What ... (Read 13 times)

urbanoutfitters

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on: Jul 28, 2018
Is it good or bad that many materials must be imported to run the economy of any country?
 
  What will be an ideal response?

Question 2

Your friend Alf tells you that the magnetic force on a stationary 10 C charge near the north pole of a magnet having a magnetic field of 0.10 tesla is twice as great as that on a stationary 5.0 C charge at exactly the same position.
 
  Discuss this with your friend and explain how he is correct or incorrect.


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amit

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

It is both good and bad. If properly handled, both sides can benefit. Local politics,
if corrupt, can render a dismal result. It can enrich local oligarchs while impoverishing and
exploiting the general population.

Answer to Question 2

Your friend is both right and wrong. If the charge is stationary, there will be zero
magnetic force on it; a charge must be moving to have a magnetic force acting. Zero is twice
as great as zero, so in this sense your friend is correct.
Undoubtedly, though, the friend meant that factor of two to mean something. He or she
thought that there was a definite nonzero answer for the force, and this cannot be correct.


urbanoutfitters

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Reply 2 on: Jul 28, 2018
Excellent

chereeb

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Reply 3 on: Yesterday
Gracias!

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