Recent content by Nim

One of the ways we use the term possibility is "We can go to Mars". Another way is "We may learn how to travel to Mars faster than light as our understanding of physics progresses". What exactly does it mean in modal logic? Would a statement like 1+1=2 be considered possible in modal logic or...

I was mainly thinking about data storage and transfer rates, these are common categories in unit converters. I thought it was strange that there was no official SI unit of measurement for it since it's something so often measured. Also, I am adding dimensional analysis to a calculator I am...

Why is the quantity "information" missing from the SI system? Also, if they did add it, do you think it would be added as a base unit or dimensionless derived unit?

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If we do exist on a 2D surface, like a hologram, it does make sense of the idea that all information in a volume can fit onto its area, which is really bizarre. The whole thing sounds crazy to me, it's hard to envision an intuitive understanding of how such a thing is possible. Maybe I just need...

I first came across this concept in a Scientific American magazine. At the time it was nigh impossible to find much more information on it. Even now I am having a hard time wrapping my head around it. So I have a few questions. From what I understand, it basically says: Every single bit of...

Ya I know, and distance from the surface adds variation too. But I thought it was the "Quadratic Mean Radius" that gives you the average. But it's the "Equatorial Radius"?

I just made it up. I found out later that it's also the name of a math game. I didn't realize it would take so much work. I have a friend who knows calculus. But... I think I need a friend that knows advanced calc? and classical physics? I had them look at it just in case, and it was definitely...

Thank you. Unfortunately, I am math illiterate. I don't know what any of this means, or how to use it. I see 4 equations? I need to arrange them somehow? Like enigmatic Lego blocks? The language is alien to me as well, such as "partial fractions", "separable first order equation", and...

I finally found something close at this website: http://keisan.casio.com/has10/SpecExec.cgi #1 Sqrt(m*g/k)*Sqrt(m/(g*k))*Log(Cosh(t/Sqrt(m/(g*k)))) #2 Sqrt(2*m*g/k)*Tanh(t*Sqrt(g*k/(2*m))) The problem is that you have to enter TIME instead of DISTANCE... The same website has the ones that...

Sorry. I know I am dragging out an old thread, but I had to comment on this. Awhile back I was messing around with the equation to find out Earth's gravitational acceleration and couldn't figure out why I wasn't getting 9.81. I kept getting 9.80065745906891. But that was because I was using...

How do you add air resistance to these 2 equations? #1 sqrt(2 * d / g) = time until impact #2 sqrt(2 * d * g) = velocity on impact The equation for air resistance is: Fd = 0.5 * Air Density * Velocity ^2 * Frontal Area * Drag Coefficient How would you combine this equation with the above...

The hyperphysics website gave 160 GHz as an answer using the linear frequency equation. I just have to use a different constant. Thanks for the help.

What is the peak frequency of the Cosmic Microwave Background? Using Wien's Displacement (#1) and then converting the wavelength of frequency (#2), I get 282 GHz. #1. 0.0028977685 / 2.728 = 0.00106223185483871 Meters (1 millimeter) #2. 299792458 / 0.00106223185483871 =...

The explanation I've heard for gravity as depicted by relativity, is that it's the consequence of mass curving spacetime. This means that the reason why the light from a star behind Sun is bent is because evening though the light is traveling a straight line, since space itself is bent...