Computer __ is any part of the computer that can be seen and touched​

How can you know if the person or organization providing the information has the credentials and knowledge to speak on this topic? one clue is the type of web site it is--the domain name ".org" tells you that this site is run by a nonprofit organization.

For which utilities, if any, does the landlord pay?

Looking at the electroscope, describe how you can cause the two leaves at the bottom to repel each other and stay that way