4 Using a scale of 1 cm to represent 10N, find the size and direction of the resultant of forces of 30 N and 40N acting
at right angles to each other.
Draw a parallelogram

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. 

Answer increases the risk of developing genetically influenced diseases;