Here's how you can force close running apps on the Nexus 7 tablet.
1. Go to Settings.
2. Press on Apps under Device.
3. Tap the app you want to close.
4. Tap the Force Stop button.
5. Choose OK.
Sometimes you have no choice but to close running apps that are causing problems on your Nexus 7. So it's a very good idea to know how to do it properly so you can stop them from negatively affecting your Nexus 7.
Read more: CNet