function [v,vterm] = Student(m,d,T) % A funuction to deterined a vertically falling cannonball, while being % effected by drag % Various Constant cd = 0.47; % drag coefficient for a sphere rho = 1.2; % density of air g = 9.81; % gravitationa...
(This is probably due to the transition to higher-density air where it has to slow down.) But during the rest of the fall, it's not heating up much. This would give it plenty of time to cool off, increasing its odds of survival. The same is true for the tennis ball, even though...
Densities of iron alloy with (a,b) ~4 wt.%, (c) ~6 wt.%, and (d) ~9 wt.% of dissolved carbon as a function of pressure. Symbols are pressures estimated using first-principles molecular dynamics (FPMD) simulations at constant density, at 7000 K (red), 6000 K (blue), 5000...
Integrin alpha 5 (ITGA5) was previously confirmed to be related to prognosis in several cancer types; however, its function in clear cell renal cell carcinoma (ccRCC) and how this molecule regulates tumor progression and the tumor microenvironment (TME) remain to be elucidated. Methods We investi...
Plot of calculated compressional wave velocity (\({V}_{P}\)) for liquid Fe–C as a function of density (\(\rho\)) for various carbon concentrations, i.e., ~4, ~6, and ~9 wt.% along each isotherm: 7000 K (red), 6000 K (blue), 5000 K (brown), and 4000 K (gree...
and similar to other regional means such as in the Great Barrier Reef23and Caribbean29before declines in the 2010s and 1980s respectively. We also did not find evidence of geographic variability in coral cover declines. In line with how coral cover has remained stable, macroalgal cover through...
(Whimshurst machine) would be much harder to accomplish than a high voltage feedthrough to the ion engine. I know the ion engine requires vacuum to function. Technically savvy people tend to hang out here, not every post is immediately worthy of the mighty “you people”.https://xkcd.com/...
We use essential cookies to make sure the site can function. We also use optional cookies for advertising, personalisation of content, usage analysis, and social media. By accepting optional cookies, you consent to the processing of your personal data - including transfers to third parties. Some...
Estimates of the permafrost-climate feedback vary in magnitude and sign, partly because permafrost carbon stability in warmer-than-present conditions is not well constrained. Here we use a Plio-Pleistocene lacustrine reconstruction of mean annual air tem
By deriving a generalized form for the Nernst equation, we find that a relatively small magnetic field (approximately 1 T) with a large gradient (up to 1 GT/m) can significantly change the membrane potential of the cell and thus have a significant impact on not only the properties and...