In terms of size and comparability yes. However, I think there is a very minor charging difference in terms if power output.
[Added by DH - I think you'll find the only difference is that the mains adapter for iPad has 2A output vs. 1A for iPhone/Pod. You should be able to use the iPad charger with iPhone (will only draw the required current). And you should be able to use an iPhone charger with iPad (but it will take longer to charge).]
The charger port are not same in size. But some universal iPhone charger (not original made by Apple) can support both of them.
Yes. the iPhone charger is compatible with iPod touch. they have same port.
no no no the iPod shuffle charger is too small
They all use the same slot for input but different chargers can use the same input. In other words every ipod can be charged on one charger.
yes
Yes - the Ipod charger is 5.1v, and the Walkman is 5v. Use the Sony USB cable & it will charger just fine (Sony NWZ-Z1040 charged with Ipod/Ipad/Iphone USB charger confirmed).
All ipods have the same type charger so any ipod charger will work with any ipod
Yes. The iPod Touch, the iPhone, and the iPad all use the same App Store.
Most likely. Gently push it in and if it doesn't go don't force it.
No because I lost my iPod touch charger and I had my iPod nano charger and I started to use it and I bought a new iPod touch charger and it wouldn't charge, only the nano would work
You can use an iPod charger to charge an iPhone. In fact, any 30 pin iPod/apple connector with a Male USB connector on the other end can be used to charge an iPhone if it can be connected to a power source such as a computer's USB port or a USB wall/car charger with a USB port.
Yes.
The difference between the Iphone 4 and the iPod Touch is that the iPhone is techincally a iPod, but with phoning capabilities. Also, the iPhone 4 can use FaceTime, a app that use video calling. Also, the newest iPod has FaceTime too. So, both the iPhone and the iPod are both the same.