Safari Live - Day 42 | National Geographic

That’s New Jersey. Okay, built a scale kod Island, and they have now—get this—this is what kills me—they have 8.8 million people in New Jersey on purpose. So guess what city I’m in now? Washington, D.C., our nation’s capital. It is the seat of power for t…

So probably the main thing you will hear when you talk about investing is: What is the return that you got on your investment? Return on investment is often times, people will say ROI, and there’s a lot of different ways of calculating it. But maybe the m…

An object is moving along a line. The following graph gives the object’s velocity over time. For each point on the graph, is the object speeding up, slowing down, or neither? So pause this video and see if you can figure that out. All right, now let’s do…

There’s two kinds of ideal sources we’re going to talk about. One is an ideal voltage source, and the other is an ideal current source. An ideal voltage source, the symbol looks like a circle; like that, we put a voltage indication right inside there. Tha…

Hugo plans to buy packs of baseball cards until he gets the card of his favorite player, but he only has enough money to buy at most four packs. Suppose that each pack has a probability of 0.2 of containing the card Hugo is hoping for. Let the random vari…

Look around you. Where are you? Where is this place you are occupying? Somewhere in a room, maybe in a city on a continent on a planet orbiting a star in a galaxy among billions. But… where is all of that? While this may feel like a daft question, it turn…