How close does an object have to be to earth to be pulled by gravity?

Pulled from Quora, here is one of the best, and most popular, answers to a question. Written by Mark Eichenlaub, a graduate student in physics. How close does an object have to be to earth to be pulled by gravity? This question doesn’t have a direct answer because, for lack of a less-direct way of …

Why Facebook bought Instagram – from Om Malik and Robert Scoble

Both Om Malik and Robert Scoble make interesting points, Facebook paid double for what many considered Instagram to be worth and Facebook desperately needs help with mobile devices. From Om Malik: A few days ago Instagram was rumored to be valued at $500 million. A few months ago it was $300 million. Its last round …

You can reuse all new content on Quora

Quora is a fantastic resource for and I often want to share the info I find. With that in mind I found the following copyright rules on the site: — This is an official Quora policy that reflects the agreed upon conventions of the community You can reuse all new content on Quora by publishing it anywhere on …

How could Apple spend its $51 billion cash?

The common advice would be to acquire some hot property like Twitter, Pandora, or Hulu. Doing so would satisfy Wall Street’s insatiable hunger for greedy growth, but wouldn’t be all that strategic. Another idea would be for Apple to invest in itself. A post over on Business Insider highlights this using a thread on Quora. …