Short answer: No.Android tablets are made for a mobile OS, and sport specs insufficient to run Windows.
Long answer: Yes, but it's not practical at all.
You can hack a rooted Android tablet to run a VM (Virtual Machine) of older versions of Windows, but not well. And any version of Windows that does not support ARM will not run at all. So you're limited to running Windows 95 on a tablet with a capacitive touchscreen on top of another OS.
Yes you need to buy a windows disc and follow the instructions provided on how to install it. First check the netbook can support windows. Ie has it got enough ram
Desktop MS Office is not available for Android OS. However, Microsoft has come out with Microsoft Office Mobile for all mobile operating systems, including Android OS.
Yes, the Nabi is an Android OS-powered tablet, but configured for children.
Well, it depends on what your needs are if you are searching for a tablet mainly for reading. The Nook has proprietary apps that are specific to that device that you might not find in a tablet with Android OS. However, you would have limited app choices, and an older Android OS built in with the Nook.
Android is a Linux OS
4.2.2 (Jelly Bean)
Yes, Openoffice was designed specifically for tablet use. It runs on the Android OS but may need an additional download of a file converter from the Android market place.
The Dell Streak smartphone/tablet already has Android OS (version 2.2, Froyo) on board.
Google Play should already be pre-loaded in an Android tablet, unless the OS onboard is older than Android 2.3 OS (Gingerbread).
The Barnes & Noble Nook Color uses a customized version of Android OS.
Because your Android OS version may be outdated. And there's no way to update it.
Windows 7 is an OS for computers. But if you mean windows 7 the new phone OS then i would have to say android. There are thousands of apps you can buy (and still hundreds that are free)
Yes, it is possible to install Android OS into a desktop, but it will require modification on the user's part. However, there are all-in-one (AIO) computers where it runs Android OS, and one that can toggle between Android and Windows OS.