The diagram shows a positive charge moving in a magnetic field? and which direction is the magnetic force acting on the charge into the screen out of the screen see up down
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The best answer i can think of is b

The chemical reactions lab we did is typically called a "copper plating lab,  because the acid solution cleaned the pennies and made the copper look shinier;   the acid solution cleaned the paperclips and made them look like pennies;   &   the copper from the pennies was removed, and then added to the paperclips.