you go to a store
Buy a new mac
Your charger may be shot. Remove the battery and plug in the charger. If your computer does not power up, it's the charger.
try getting a new charger
about a year or two, then it will start to die really fast without a charger
A cell phone usually works better with a portable wall charger. Connecting a USB into a cell phone from a mac or computer May cause the USB port to fall asleep when the mac or computer goes into sleep mode.
No, you cannot use an Air charger with a Macbook Pro. It has a different power rating (watts). New Macbook Pros and Airs also feature a different, smaller connector for power (Magsafe 2).
They sell an Apple World Travel Adapter Kit. Not sure if it will work on a Macbook Pro. If not then Best Buy can get you a charger or you can order one directly from the Apple store.
A charger does use power when not charging the computer if it is plugged in. Not as much, but definitely some. How much depends on many factors. It is a good idea to unplug it.
Try holding down the option key after pushing the power button.
If it the acutal kindle you can hook up the chord to it. I use my camera chord. something that fits in to the place u usually put the charger.
regular plain charger, charger SE, charger 500, and charger R/T.
It definitely depends on the type of computer that you are using. A Mac charger can cost up to $120, while a Dell charger may only cost up to $50. The prices are quite variable so it's difficult to say what the average price would be.