Just like you do on a Windows PC. Unplug it from the wall outlet.
If there is a power cut then the Mac will be off. The Start Up Automatically.... option will automatically restart your Mac when the power comes back back on.
By pressing the power button on the back
When running and not in sleep mode the 21.5" iMac uses 205 watts of power. The 27" iMac uses 310 watts. In sleep mode they each use around 2 watts.
The G5 came with the OS 9 operating system and had a Power PC processor. It was the last edition of Mac OS. The iMac switched to the OSx operating system with the next iMac. There was an education only model G5 that did ship with OSx Panther.
To force a 2000 iMac to start, first ensure it is plugged into a power source and check that the power outlet is functional. If it doesn't power on, try resetting the System Management Controller (SMC) by unplugging the power cord for 15 seconds, then reconnecting it and waiting another 5 seconds before pressing the power button. If the iMac still doesn't start, you may need to check for hardware issues, such as a faulty power supply or RAM.
The iMac does not run off a battery nor does it contain a battery. It runs strictly off AC power and must be plugged in.
Click the link.
Turn it on by pushing the power button on the back left bottom of the iMac.
No, you can only get that discount on a new iMac not a refurbished iMac.
The original iMac was the G3 which came out in (1998). It was followed by the G4 (2002), then the G5 (2004), then the Intel iMac plastic version (2006). The 5th iMac was the aluminum iMac which came out in (August 2007), followed by the iMac Aluminum Unibody (2009). The newest iMac is simply called 2012 iMac and it came out on November 30, 2012.
No. Go visit Apple.com to view the latest on iMac and MacBook. This is the best way to view Mac based products.
There is no "iMac Air".