Safari Live - Day 337 | National Geographic

Que rico! Is it real? Seems like every day I would have some beautiful earrings with diamonds in it that would hit my songs on the radio. All the little girls would be screaming, “Aah!” Then I’d shake their hands, and a little girl would pass out. “Oh my …

Hi everyone! Welcome to the Khan Academy homeroom. For those who are wondering what this is, this is just a forum for all of us to stay together, especially since it was started when schools closed. Obviously, summer has arrived, and I announced that scho…

What about cryptocurrencies? Are you a believer in cryptocurrencies? No, I’m not a believer in cryptocurrencies, and I would say that cryptocurrencies are a bubble. Billionaire hedge fund manager John Paulson said in a recent interview that Bitcoin is go…

In the past two weeks, serious difficulties at a small number of banks have emerged. Isolated banking problems, if left unaddressed, can undermine confidence in healthy banks and threaten the ability of the banking system as a whole. That is why, in respo…

We’re now going to tackle Part B of the potato problem. It says, “Use the second derivative of H with respect to time to determine whether your answer in part A is an underestimate or an overestimate of the internal temperature of the potato at time T equ…

So I have an uncompressed spring here, and this spring has a spring constant of 4 newtons per meter. Then, I take a 10 gram mass, a 10 gram ball, and I put it at the top of the spring. I push down to compress that spring by 10 centimeters. Let’s call that…