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.
There are three models: a 13 inch version with traditional function keys, which costs $1,499; a 13 inch version with the new touch bar and touch ID, which costs $1,799; and the 15 inch version with the touch bar and touch ID, which costs $2,399. This is the first major upgrade to the Macbook Pro since 2012, and it comes with several key features.