A horizontal force, F1 = 75 N, and a force, F2 = 18.3 N acting at an angle of θ to the horizontal, are applied to a block of mass m = 2.4 kg. The coefficient of kinetic friction between the block and the surface is μk = 0.2. The block is moving to the right.

What is on your multiple choice anwers

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.