How to change battery in thomas train trackmaster?

Hyperactive media sales has 10 windows 7 laptop computers used by sales-people in the organization. each laptop computer has several customized applications that are used during the sales process as well as customer relationship management software. all of the applications on the laptops are difficult to configure and have large data files. if all of the laptops have current hardware, what is the easiest way to install windows 10 on them?

Explain how email technologies enable the exchange of messages between users. find out the typical parts of an email address and explain each part.

The first time a user launches the powerpoint program, which view is shown allowing the user to access recent presentations or create new presentations based on templates?