Researching further, the friends find that soft iron is readily magnetized when it is placed in the magnetic field of an inductor, such as the coils in this simulation. When the domains of the iron are aligned in the inductor's field, they can increase the strength of the magnetic field significantly. Baraz asks Eli how the magnetic ring in this simulation affects the induced emf. What should be his response?

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

i believe the answer is a hope it and is correct

well clustered together.

points close on a scatter diagram