Mount St. Helens, Mount Rainer, Mount Shasta, and Mount Hood are all located within the region outlined in red. Why are there so
many composite volcanoes in this region?

the amount of current in the coil

hi there!

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

-awesomerepublic   : )

b.a device that inputs heat into a cool object

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.