Your electric drill rotates initially at 5.45 rad/s. You slide the speed control and cause the drill to undergo constant angular acceleration of 0.333 rad/s2 for 4.33 s. What is the drill's angular displacement during that time interval

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. 

It has more electrons than an neutral object