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Author Question: A current in a long, straight wire produces a magnetic field. The magnetic field lines: a. go out ... (Read 235 times)

RRMR

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on: Jul 28, 2018
A current in a long, straight wire produces a magnetic field. The magnetic field lines:
 a. go out from the wire to infinity.
  b. form circles that go around the wire.
  c. come in from infinity to the wire.
  d. form circles that pass through the wire.

Question 2

A ping-pong ball has an average density of 0.140 g/cm3 and a diameter of 3.80 cm. What force would be required to keep the ball completely submerged under water?
 a. 0.484 N
  c. 0.516 N
  b. 0.242 N
  d. 0.258 N


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ju

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

B

Answer to Question 2

B


RRMR

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

Perkypinki

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Reply 3 on: Yesterday
Wow, this really help

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