1. Rearrange the equation for the area of a rectangle (A = l w) to solve for length, l. Step 1

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2. Rearrange the equation for velocity v = d/t to solve for time, t.
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a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.