A certain lever has a mechanical advantage of 5.5 how heavy of a load could the lever lift with a input force of 20.0 N

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. 

Phagocytes contain digestive enzymes to facilitate the process of phagocytosis

An em wave does not require a medium, while a mechanical wave does.