A thin copper rod 1.00 m long has a mass of 50.0 g. What is the ...

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A thin copper rod 1.00 m long has a mass of 50.0 g. What is the minimum current in the rod that would allow it to levitate above the ground in a magnetic field of magnitude 0.100 T?
  1.1.20 A
  2.2.40 A
  3.4.90 A
  4.9.80 A
  5.none of those answers

Question 2

It is July and you are in your hometown. As you travel northward toward the north pole, how does the number of daylight hours vary? How does the number of daylight hours vary as you travel southward toward the south pole?

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Answer to Question 1

3

Answer to Question 2

The number of daylight hours increases as you travel northward. As you travel
southward the number of daylight hours decreases.

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TY

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You're welcome