Our primary reason for studying the theories of Ptolemy, ...

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Our primary reason for studying the theories of Ptolemy, Copernicus, and Kepler in this course is
 
  A) to learn some history of physics and astronomy.
  B) to learn about the methods and the validity of science.
  C) so that we can understand the structure of our solar system.
  D) to see how these early theories of atomic physics compare with more recent studies.
  E) as a foundation for our later study of Newtonian physics.

Question 2

A cylindrical insulated wire of diameter 5.0 mm is tightly wound 200 times around a cylindrical core to form a solenoid with adjacent coils touching each other.
 
  When a 0.10 A current is sent through the wire, what is the magnitude of the magnetic field on the axis of the solenoid near its center?
  (0 = 4  10-7 T  m/A)
  A) 6.6  10-5 T
  B) 2.5  10-5 T
  C) 1.3  10-5 T
  D) 3.6  10-5 T
  E) 9.8  10-5 T

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Answer to Question 1

B

Answer to Question 2

B

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