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.
This video is a step by step guide to reinstalling OSX Mountain Lion on a Macbook Pro. 1. Step one is to insert the OSX DVD into the slot drive of the Macbook Pro. 2. Start the install. 3. Agree to the Apple terms and conditions. For the rest of the guide click the link below.