Solving a problem in physics section 1 paragraph 45 el

Solving a problem in physics section 1 paragraph 45 el

45. In the same plane with an infinitely long, straight current I = A 5 is a rectangular frame, streamlined current I1 = 1 A. The long side frame b = 20 cm parallel to the current and stored by a distance x0 = 5 cm, the smaller side of a = 10 cm. Find a job that needs to commit to:
1) to move the frame parallel to itself at a distance equal to a;
2) turn the frame around the 1800 second party b.
The currents I1 and I assumed to be constant.

Additional information:

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)