The current entering the positive terminal of a device is (t)=3e-2tma and the voltage across the device is v(t)= 10di/dt v.
(a) find the charge delivered to the device between t=0 and t=2 s.
(b) calculate the power absorbed.
(c) determine the energy absorbed in 3 s.

Some type of thing that was invisible

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