A Washer with Inner Diameter 5 $\circ$
B)19 ^$\circ$
C)85 ^$\circ$

question 8

Multiple Choice

A washer with inner diameter 5.0 cm is carried in your pocket as you walk directly north according to your magnetic compass.Assume the normal to the washer's plane is exactly horizontal,pointing toward magnetic north.The Earth's magnetic field strength is 0.056 mT.If the magnetic flux through the washer's opening is 36 nTm²,what is the angle below local horizontal that the magnetic field vector points?

• A)71 \(\circ\)
• B)19 \(\circ\)
• C)85 \(\circ\)
• D)4.7 \(\circ\)
• E)None are correct.

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Definitions:

Subducts

Occurs when one tectonic plate moves under another and sinks into the Earth's mantle due to plate tectonic processes.

Subduction Zone

A region at convergent plate boundaries where one tectonic plate moves under another into the mantle, often causing earthquakes and volcanic activity.

Seawater

The saltwater that makes up the oceans and seas covering more than 70% of the Earth's surface, comprising a complex solution of various salts and minerals.

Mid-Ocean Ridge

A subaquatic chain of mountains created by the movement of tectonic plates, leading to the formation of new ocean floor.