Which type of boundary is modeled?
a. the formation of the himalaya mountains?
b. the formation of greenland, a volcanic island country in northern atlantic ocean?

(the types of boundaries there are is transform, divergent, convergent)

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.