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Author Question: What type of galaxy was observed by Tully and Fisher? ... (Read 75 times)

rosent76

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on: Jul 28, 2018
What type of galaxy was observed by Tully and Fisher?

Question 2

A long solenoid with closely spaced turns carries electric current. Each turn of wire exerts:
  1.an attractive force on the next adjacent turn.
  2.a repulsive force on the next adjacent turn.
  3.zero force on the next adjacent turn.
  4.either an attractive or a repulsive force on the next turn, depending on the direction of current in the solenoid.


pratush dev

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

A spiral galaxy.

Answer to Question 2

1


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