Apple has started to air its first TV advertisement devoted to the iPad 2. Entitled “We Believe,” the commercial shows the iPad 2 being used for a variety of apps in front of a black background, while a narrator states, “This is what we believe. Technology alone is not enough. Faster, thinner, lighter: those are all good things. But when technology gets out of the way, everything becomes more delightful. Even magical. That’s…