B is the correct answer since acid corrode on metals such as carbon, steel, zinc and such.
Iron rich minerals in rock pointed in one direction the switch to the exact opposite direction. I'd say that what supports this idea is that Earth's magnetic field goes through pole reversals.<span>
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Answer:
0
Explanation:
Forces with equal magnitudes and opposite directions cancel each other out, so the net force is 0.
Answer:
<u>Resistance</u><u> </u><u>is</u><u> </u><u>1</u><u>.</u><u>7</u><u>5</u><u> </u><u>ohms</u>
Explanation:
Magnetic flux:

N is number of turns, N = 8
B is magnetic flux
A is area of projection.
From faradays law:

where E is the Electro motive force.
But E = IR
where I is current and R is resistance:
