Jump to content


Senior Members
  • Posts

  • Joined

  • Last visited


  • Quark

1123581321's Achievements


Atom (5/13)



  1. Hi John, Yes that does make sense, however i guess my question is more so why exactly simply going: 10 cm^3 = 0.1 m^3 ... then (10)^3 cm^3 = (0.1)^3 m^3 ... then 1000 cm^3 = 0.001 m^3, doesn't give you the right answer, whereas going through the process of finding a conversion factor and then multiplying it by the given value works ? Thanks.
  2. Thanks for the explanation John. Thats the answer i came across as well, however i checked it again by plugging the numbers into a unit conversion website and it seemed to give back 0.00001 which I'm still confused about but it seems to work out in the question I'm doing. So I'm still on the sidelines a bit with it. Any reason u can think of why it would have given that number..?
  3. Hi, Ive recently worked on a chemistry question which required a volume conversion from cm^3 to m^3 Specifically the number was 10 cm^3 and it shouldn't have been as difficult as its ended up being, but i eventually got the right answer. However, the method which gave the right number, was in the format of: (10 cm^3 / 1) * (...m^3 / ...cm^3) = 0.00001, of which turned out from (10 cm^3 / 1) * (0.001 m^3 / 1000cm^3), which seems to give the right conversion factor. This was worked out from equating them as follows: 10 cm^3 = 0.1 m^3 ... then, (10)^3 cm^3 = (0.1)^3 m^3 ... which gives 1000 cm^3 = 0.001 m^3, and then using those values in the equation (the process stated). The problem however is that while this works, it doesn't seem to work out the same via the process of simply going: (10 cm * 10 cm * 10 cm) / (100 cm * 100 cm * 100 cm) = .. And since its a volume (or in cubic units), why exactly should accounting for the volume by means of, (x * y * z) / (x * y * z) to put it that way, not work the same ??? Thanks.
  4. Hi, this year i was diagnosed as having had cartilage build up on my left side, specially on the muscle running into the heart, which had moved one morning and resulted in arrhythmia and so forth. Anyway, i have since had sensations that had felt like they were centred in the middle of my brain. Ive had a CT scan, which turned up nothing and my blood pressure is fine. The sensations have felt like sort of slightly pulsating, with tingling regions, moving around in the area of what has felt like my insula cortex, temporal/pariental lobe regions as well as some in the occipital lobe and some in the prefrontal cortex. So basically throughout the middle region(s) of my head, through these areas. Its felt like a little bubble of pressure right in the centre of my head, but has moved around and has been accompanied by slight headaches. However, i havent been sick or had blackout of any kind. Also, the ridding of the cartilage has allowed increased blood flow, after 10 years of build up, specifically in my brains left hemisphere. So, in consideration of this, i was wondering if anyone could give me an explanation as to what this weird pressure is... Could a change in blood flow to the brain after an extended period of time cause such sensations.. p.s. Something its been like wanting to stick a needle or something like that into my head and releasing the it (the pressure that is). Like that. and im not sure if its getting better or worse, just feels weird. Thanks.
  5. Also, how exactly is; (n^2 - 1)/n^3 divergent in my answers, they somehow got; 1/2^n from it. could you please explain..
  6. Thanks I will... And would u b able to explain that last Q to me.. Thanks I will... And would u b able to explain that last Q to me..
  7. thanks, that clears it up. also, how exactly does; | 2-i |^2 = 2^2 + (-1)^2 = 5 ? note; | | , is the abs value. and how does; n as a subset of N, where n^3 > 4 , have an infimum of 3, when clearly 2^3 = 8, which is bigger than 4 ?.
  8. Ok, thanks. But when, one side gets the 'i' and the other doesnt.. is that because the denominators cancels out, since your multiplying it by itself, while the numerator keeps it ? Also, how exactly are they split to get the LHS & RHS ?
  9. not sure if this belongs here, However, i was wondering with: 3+i/1-i = 3+3i+i-1/2 ; in the process of solving it, Where does the '2' come from..(in the denominator).
  10. Yeh sorry, forgot to mention that im texting from Australia.. But thanks for the replies.
  11. Hi, i was wondering what number (or number code etc) you put in front of a mobile number to contact someone in the US ? Thanks.
  12. Hi, i doing an assignment in an algebra and differential calculus unit and it asks the following: The brightness, I, of a light beam that illuminates some surface is expressed by: I = (k*sinx)/(r^2), where k is a constant for the given source, r is the distance between the source and the illuminated point and x is the angle between the light ray and surface. at what height should you suspend a lamp over a round table of radius, a, so that the edge of the table is maximally bright. ? and in the old soln, it has: h = a/(square root of 2), but i dont understand how they get there... If anyone could give me something to go with that would be great, because the way its worked out doesnt make sense to me. thanks.
  13. Oh yeah, didn't consider that. Well, nonetheless, are topological defects the result of irregularities in the initial state or from manifestations etc from the process of symmetry breaking. ?
  14. Was wondering, are topological defects the result of the proposed singularity of the universe having irregularities etc..
  15. ok. i guess that answers my question. thanks. but could a gravity wave change a particles spin ?, while it stays the form.
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.