Composition Definition and 374 Threads

Me and my dad got in the follwoing debate: if two identical bullets collide in identical conditions, would they staick together, or be rejected parabolically back. Facts: Two projectiles of identical dimensions and characteristics collide in identical angles, velocities and directions...

It is not intuitive, for me at least, why when relating the velocity of 3 inertial frames (Say F1, F2 moving at v1 with respect to F1, and F3 moving at v2 with respect to F2), one mulitplies the transforms of F2 and F3 to get the transform for F1 with respect to F3 to get v3. I understand why v3...

As a layperson, I read that nuclei components nucleons(n,p) are normally built up of three quarks. But does that number of particle not define only a plane (outside the radii of quarks themselves)...Are nucleon having only a surface (or a volume wiht 1 negligeable length) and not a volume ...

what is your knowledge about carbon ions? is there a machine that determines its creature?

Is there any definite data on the composition of Phobos and Deimos?

what is the composition of MLI Blanket

define right-inverse of a mapping B to be mapping A, such that B * A= identity (iota). Where the operation * is composition. Note that B is A's left-inverse. QUESTION: Assume S is a nonempty set and that A is an element of M(S) -the set of all mappings S->S. a) Prove A has a left...

Hi. I haven't been here in a while, but I've just run across a question that I can neither find an easy counterexample for nor prove easily. Here it is: Let G be a group, and \alpha : G \rightarrow G and \beta : G \rightarrow G be endomorphisms. Assume that \alpha \circ \beta is an...

Im given this problem: Ge forms a substitutional solid solution with Si. find the weight% of Ge, that must be added to Si to yield an alloy that contains 2.43x10^21 Ge atoms per cubic centimetr. The densities of pure Ge and Si are 5.32 and 2.33 g/cm^3, respectively. then I have a formula...

Hello, I've been an intermittent poster here for about five years. I've come back for another shot at PF. So for a first thread: Class is a currently a review of old topics. One of them is 'function composition.' I was doing an assignment today and came upon a question that required one to...

Can anyone show me how to prove exactly that the composition of 2 function is again a function, by using the following 3 formulas? Suppose f: A -> B and g: B -> C are functions, then (1)\forall \ a \ \epsilon \ A : \exists ! \ b \ \epsilon \ B : (a,b) \ \epsilon \ f (2)\forall \ b \...

Hello, I need some help calculating the pecent composition of casien and lactose in milk. I started out with 50ml of nonfat milk, at the end of the experiment I got 1.599g casien and 1.610g of lactose. My idea was to convert these values into ml using density but I could not find the...

an atom consists of an electron (spin 1/2) and a positively charged spin 2 particle at the nucleus (in place of the proton). is this 'atom' a boson or a fermion?

A room is 12 ft by 12ft by 8ft at 40F. Use normal composition of air to determine its density and assume a pressure of 1.00 atm. How do I get started?

Hi! How many per cent of NaF and AlF3 does Na4AlF6 consist of? I get 20 % NaF, but that isn't correct. I've done such problems before, just this seems to be unusual. Can you maybe check my work. Greatfull, Danne

low composition of sodium in table salt? today i went to supermarket for buying some food, and i discovered that some salt which is low amount of sodium??how can it be?as i learned from chemistry , the ratio of sodium and chloride is 1 to 1 .

f(x) = 3x + 2 and g(x) = x + 5 f[g(x)] but some how this equals 3x + 17? please show me. g[f(x)] I know this would equal 3x + 7 Thanks <3

Is Cosmic Matter Composition Complete ? Convincing theoretical and observational evidence indicate that 5% of mass of the universe is made up protons, neutrons, and electrons (.05%). 25% of the mass is from dark matter. What is dark matter? Nobody is certain. 70% from dark energy of repulsive...

In attempting to prove an algebraic identity in physics, I found that my proof was simplified in appearance if i used an operation a@b=a + b - ab By flipping through a book on ring theory, I found that this is called a "circle composition operation", and it is used in one definition of the...

Whatever other arguments that one make for or against time travel, the one that limits us to the greatest degree is one of composition. Each of us is made up of cells made up of physical elements from the air we breathe, the food we eat and even have a brain that is shaped by the...

A quark and an anti - quark combine to form a meson. The pi-meson family is made up of u and d quarks only. A pi-meson can be positively, negatively or neutrally charged. Give the quark composition of each of the 3 types of pi-meson. The positively charged pion has a composition of an anti...

On what grounds Do you base the following claims: You accusing another of insanity does not make them so. This would be like saying that because i believe the Earth is a stantionary box, that it therefore must follow that it so. secondly, logic seems to be destroyed by your claims...

I'm curious to know the atomic/molecular composition of outer space, excluding the celestial bodies suspended within it and theoretical "dark matter". I'm also interested in knowing the approximate temperature of space that isn't being affected by a star or other nearby body, or if...

Hi folks:smile: Recently I had been trying to write a little sci-fi composition somehwat narrative in style. Hopefully I'd like to at least publish it in a small booklet here in our city, when resources come, that is. I'm into art, but am also into physics as an enthusiast. However I'd...