If we assume space to be infinite, what is the possibility of ...

[naturalchemist]

If we assume space to be infinite, what is the possibility of multiple universes where the laws of physics may be different than those of our universe?

Question 2

Solenoid A has length L and N turns, solenoid B has length 2L and N turns, and solenoid C has length L/2 and 2N turns. If each solenoid carries the same current, rank the magnitudes of the magnetic fields in the centers of the solenoids from largest to smallest.
  1.C > A > B
  2.A > B > C
  3.B > C > A

[C.mcnichol98]

Answer to Question 1

Since we have not detected a limit to space we must treat it as theoretically infinite,
and since there are regions beyond the outer limits of our current observations we
should probably admit the possibility of regions where the laws of physics are
different. If such regions exist, however, it will be very difficult for us to understand
what goes on there since our explanations of what we observe in space relies heavily
on our belief that the principles of science that we see in action on and near our
Earth, must also hold true for other regions of space as well.

Answer to Question 2

1

[naturalchemist]

Excellent

[patma1981]

TYSM