Recent content by uq_civediv

i think we've all seen studies saying that having relatives w/ say, breast cancer increases your chances of getting it too. is there data on overlap between different types of cancer, like having a close relative die of colon cancer influencing your chances of developing lung cancer ? or...

i don't actually have a new question if this turns out correct so feel free to post a new one good old taylor series of a/x gives \frac{a}{x} = \frac{a}{b} - \frac{a}{b^2}(x-b) + \frac{a}{b^3}(x-b)^2 - \frac{a}{b^4}(x-b)^3 + ... + (-1)^n \frac{a}{b^{(n+1)}}(x-b)^n + ... where a = 10^20000...

you don't need integer terms to solve a 4th degree polynomial, though you can just multiply the eq with sth to make them integer Sin(8x-arctan(4/3))+3.2Sin(16x+\pi/2)= \pm 0.6 \sqrt{1-Cos^2(8x)}-0.8Cos(8x)+6.4Cos^2(8x)-3.2 = 0 or \pm 3 \sqrt{1-a^2}-4 a+32a^2-16=0 where a=cos(8x)

you could still use the cosx if you treat it as sin(16x+pi/2) = cos(16x) = cos(2*8x) = 2cos^2(8x)-1 whereas you could expand the first term sin(8x- ... getting it in terms of sin8x and cos8x, substituting sin8x=sqrt(1-cos^2(8x)) and squaring to eliminate the sqrt leaves you with a 4th degree...

converted to heat at the point of friction

in the magnetic field. if you reduce the current in the solenoid you would get back the same amount of energy (due to inductance) you once used (against inductance) for creating the field. being able to get back E is as good as saying 'the field stores E'

sorry if I'm overcautious but you are not speaking about gravity holding the sphere together, are you (that would be VERY weak and unable to hold it together - this is done by surface tension). The word microgravity refers to Earth's gravity.

lets say i have a block of material, measures a,b,c (length width height) and two wires running in from the top, both with circular cross section, radius r, distance d from the edges ____________________ / d d /| /<--->O O<--->/ | /___________________/ |...

hmm, and yet sound carries energy (kinetic, of the moving particles) given while producing the sound. unlike heat (chaotic movement), sound is directional movement, consisting of wavefronts, and does not stay in one place (sound is heard outside the room where it was produced, disperses away)

yes.

hmm... i suppose so i wonder if there's an easy way for modifying the first approach without going into the purely analytical "(1) charge balance, (2) material balance, (3) expressions for equilibrium constants"

technically it is not homework, more like struggling with textbook material, but something tells me it would end up here anyway so here it is : there's something about the method that gives me different results using different paths so I'm going to show both of them and see if you can spot the...

unless you are forgetting that HCl is a gas unless specified otherwise (aqueous solution or sth); so by volume they mean the volume of the required gas under normal/standard conditions

a lot of transformation laws have c in them. the speed of light, however, depends on the medium ( c' ) and is different from the c in vaccuum. so my question is, which one should i use in relativistic laws if the medium is , say, water with c' = \frac{c}{1.33} of course one would say c...

bad wording on my part maybe i mean that for a wire with a current the magnetic field can be described using lines of force/flux going around the wire in circles, in a solenoid the lines go through and to the other end, when speaking of magnets the lines go from the north pole to the south...