The question comes in many variations—what next week will be like, or the next school year , or the next winter —and has so for as long as the virus has been with us.So has vaccination, including the extent to which vaccinated people spread the virus , and how well immunity holds up over time.
In the decades that followed, the Monthly published variations on the interior problem, which mainly involved horses (and in at least one case a mule) rather than goats, with fences that were circular, square, and elliptical in shape.
You might think some other communication (like a Slack channel) would help, but in my experience it still takes a significant effort to get all the students to use a new system.It takes extra time to get things working for remote classes.
Keller’s conjecture, posed 90 years ago by Ott-Heinrich Keller, is a problem about covering spaces with identical tiles.Over the years, mathematicians have chipped away at the conjecture, proving it true for some dimensions and false for others.It’s easy to see that Keller’s conjecture is true in two-dimensional space.
The car drop happens near the end of the video, starting at 9:20.Even if you don't think this is awesome (c’mon, it’s empirically proven to be awesome), it's still a great source for some physics problems you can work out at home, while we’re all doing this social distancing thing.
“This is not black and white,” says Ben Lopman, an infectious disease epidemiologist at Emory University’s Rollins School of Public Health.From a mathematical perspective, determining how big a crowd is safe depends on a couple of key questions: How many people in a given area are infected with the disease?
As this equation shows, the magnitude of the gravitational force depends on the mass of each object (m1 and m2) and the distance (r ) between them.Think of the planet and space object as a system, where the total energy in the system is constant—there’s no external force acting on it.
The hack probably should have been the biggest news of the week, but for a little distracting—and important!—thing called the Mueller probe.In expectation of Robert Mueller making big moves in the investigation before the holidays, Garrett Graff spells out the 14 questions about Trump and Russia that Mueller knows the answer to.Also this week, veteran Kristofer Goldsmith revealed that foreign trolls are targeting vets on Facebook.
What’s needed is a national wildfire strategy such as the one proposed by the Canadian Council of Forest Ministers several years ago. And finally, what’s needed is for the federal government to restore funding for the Canadian Forest Service to at least 1990s levels, when it employed 2,200 people.