Physical properties are often characterized as intensive and extensive properties. An intensive property does not depend on the size or extent of the system, nor on the amount of matter in the object, while an extensive property shows an additive relationship.
Just as Apple regularly updates its iOS mobile operating system, the company also periodically updates its OS X operating system for its MacBook Pro computers. If you own a MacBook Pro, regularly updating your Apple laptop with the newest operating system is a great way to ensure that your device always has the latest apps, features, and security enhancements.
by gkpurves, gkpurves Feb 1, 2013 11:54 PM in response to Chris Lee 310 Level 1 (0 points) in response to Chris Lee 310 I just upgraded my 13 MacBook Pro Mid 2012 from 4 to 8GB for $79.00 yesterday; change the RAM out yourself and save the extra cost.