Properties Definition and 1000 Threads

Homework Statement Which of the properties listed below determines the energy of a photon a. wavelength b. intensity of the beam c. speed of the photon d. polarization e. frequency Homework Equations E=hf=h\frac{c}{\lambda} The Attempt at a Solution Based on the equation...

Hi, Anyone know where I can find thermodynamic properties of gases at high pressure? More specifically I need to find the kinematic viscosity or the absolute viscosity of air at around 300 degrees Kelvin and 330 bar. Cheers

Homework Statement The speed of a transverse wave on a string is 450 m/s, while the wavelength is 0.18 m. The amplitude of the wave is 2.0 mm. a. What is the total up and down distance moved by the wave particle for each cycle of the wave? b. What is the frequency of the wave? c. What is...

Hi, currently I'm in gr. 12 chemistry and we're on chemical bonding. I was wondering if someone could help me with this sheet that I got.. So it is listed that the properties of difernt substances is due to 1- type of bonding 2-the type of particles which form when the boding occurs...

Homework Statement Intermolecular forces are 1- Attractive only 2-Repulsive only 3-Long-range 4-Short-range Homework Equations The 1st and 2nd options are not valid as the nature depends on the distance between the molecules. The Attempt at a Solution The answer given is...

Dear Forumers. I am working on the following problem. Let matrix P=( A B ) where A and B are matrices. Let P be an n*n orthogonal matrix. Show that A'A is an idempotent matrix. I do not know where to start. Thanks in advance for the help.

Homework Statement Zn={0,1,...,n-1}. show that an element k is a generator of Zn if and only if k and n are relatively prime. Homework Equations The Attempt at a Solution it makes sense but I am having a hard time proving this.

from rearranging e=mc^2 i got time equivalent to (kg m^2/(A V) (kilogram meter squared per ampere volt))^(1/3) so if i have a material that is 1kg, 1m long, has 1amp, and 1volt, what does the time attribute mean? is that the amount of time it takes an electron to travel from one end of the...

what is the difference between a beta particle and an electron in terms of its behaviour and physical properties like mass etc..?

I have no idea how to approach these.. any help would be greatly appreciated. I can't seem to find this in the book either so if there are any links on the web that relate to these questions please let me know.. Thanks! Prove or disprove the following statements. I and 0 represent the...

Homework Statement You are 1.5m from a charge distribution whose size is much less than 1m. You measure an electric field strength of 282 N/C. You move to a distance of 2m, and the field strength becomes 119 N/C. What is the net charge of the distribution? HINT: Don't try to calculate the...

My question goes like this: Did the inflation following the Bing Bang caused matter to emerge as it is in our universe? In other words, was it the inflation itself that gave matter - electrons, neutrons and protons - its properties (physical size, quantums, velocity, mass), or perhaps the two...

We have very frequent questions regarding the "microscopic" details of the process of reflection, the cause of transparency, etc. in solids. In many cases, people often still think of this as being caused by "atomic transition", neglecting the fact that these are solid state physics and not...

Guys, who knows why admin delete posts like this?? I'm new there and maybe do not know all rules. iniatial question was does electrons change properties of matter? If we talk about free radicals and antioxidants - it's problem of unpared electron, so by adding it via antioxidants it change...

Hello: I need to simplify the following if possible _2F_1(a,b;c;-x^2) - _2F_1(a+1,b+1;c+1;-x^2) In fact, a= 1/2 and c=3/2 and b>=1. In other words, the difference above that I am interested in is more specifically _2F_1(.5, b; 1.5; -x^2) - _2F_1(.5+1, b+1...

DNA Found to Have "Impossible" Telepathic Properties... You knew I was going to say this. Anyways, very interesting, what do you make of it? Source: Dailygalaxy.com

Given f(z) = (z+1) / (z-1) for z not equal to 1 My teacher wrote |f(z)| = |x+1+iy| / |x-1+iy| = sqrt((x+1)^2 +1) / sqrt((x-1)^2 + 1) How do the values within the modulus work out to the right hand side? I can't figure it out.

Find B when given: Y = log2B and 2y+4 + 4y+3 = 224 I could use some help figuring out the process to this. Thanks

Why is |z|^2 = z*z? z = a + ib z*z = (a - ib)(a + ib) = a^2 + b^2 z^2 = (a + ib)^2 = a^2 + 2iab - b^2 So it must have something to do with the absolute value, but I don't understand what or why.

What is the proof that states that if the square root of a natural number is not another natural number, it must be irrational? In other words, the square root of a natural number must be either natural or irrational.

I understand that electrons are found inside Atoms within specific orbitals, or quantized distances from the nucleus. There are a maximum number of electrons found within each orbit, etc. etc. I recently read that the reason for this quantized nature of orbitals has to do with the wave...

Hi there, I've got a few questions about light that I'm hoping someone can help me with. 1. If the properties of energy and mass are interchangeable, then if some particle or wave possesses charge or energy then it must also have mass. Whether a photon is acting as a particle or a wave it...

New here, have an assignment concerning Cramer's rule which I think I have a decent understanding of - I can use it to find determinants - but am a little lost on a few questions. Given the set of linear equations: a11 x1 + a12 x2 + a13 x3 = 0 a22 x2 + a23 x3 = 0...

Do you know where I could find material tables for electromagnetic properties? Especially for complex permittivity, and permeability, in the 100kHz - 10Ghz band. (hopefully at a few points within this band) My usual google fu is failing me. I've found some books and tables but they're...

Homework Statement not exactly sure were this goes ok there was a question that my teacher told me i got wrong the question asked me to compute the mean which I did... then the question went on to tell me compute the mean with another observation equal to zero then the part that...

Please can someone give me a solution of this problem? One liter N2 at 2.1 bar and two liters of Ar at 3.4 bar are mixed in a 4L flask to form an ideal gas mixture. calculate the value of the final pressure of the mixture if the initial and final temperature of the gases are respectively 304...

In deposition of thin film on a p-type silicon, how to make sure the thickness of the thin film will not affect or affect the least the electrical(Hall Effect) and structural properties? how to know how thick is the thin film that most suitable? can it be calculated? by the way, the thin film...

I've just got around to asking this question, and a quick Google search gave me nothing. What is a vacuum made of? What is the "space" that matter usually occupies?

I need to construct a finite series with N elements, such that: element 1 has the value A element N has the value B elements 1 through N sum to Z A, B and Z are all positive numbers, as is Z. Additionally, I would like minimize the largest difference between any adjacent numbers in the...

2 questions that came up in a past paper. A binary tree which is both full and complete and has h levels contains a total of 2^(h-1) leaf nodes. Prove that this is the case for all h > 0. Show that with h levels the number of internal nodes is 2^(h−1) − 1 proof by induction apparently...

\vec{F}=(\frac{x}{\sqrt{x^2+y^2+z^2}},\frac{y}{\sqrt{x^2+y^2+z^2}},\frac{z}{\sqrt{x^2+y^2+z^2}}) \vec{r}=(x,y,z) |r|=\sqrt{x^2+y^2+z^2} \vec{F}=(\frac{x}{|r|},\frac{y}{|r|},\frac{z}{|r|}) so its F=\frac{r}{|r|} i need to prove that F is a conservative field where (x,y,z)...

Homework Statement Show without evaluating the determinant the equality. Homework Equations \left( \begin{array}{ccc} 1 & a & bc \\ 1 & b & ac \\ 1 & c & ab \end{array} \right) = \left( \begin{array}{ccc}...

Group properties: 1. \forall a, b, c \in G, (a * b) * c = a * (b * c). (associativity) 2. \exists e \in G such that \forall x \in G, e * x = x * e = x. (identity) 3. \forall a \in G, \exists a' \in G such that, a * a' = a' * a = e (inverse) Instruction: Determine whether the...

I'm a new grad student preparing to do some work on Daya Bay, and I'm basically taking in all the information on neutrinos that I can right now. It's pretty interesting stuff, but I was wondering if anyone has any thoughts on the following: Assuming I correctly understand that neutrino flavor...

Would a ship float in a superfluid? Would anything float in a superfluid? I think, that the frictionless behavior of the superfluid would prevent anything from floating, because it just can't "grab" to anything, would be like vacuum, no? Yes, ships float because they displace volume of water...

Homework Statement Task 1. Show that if components of any tensor of any rank vanish in one particular coordinate system they vanish in all coordinate systems. Task 2. The components of tensor T are equal to the corresponding components of tensor W in one particular coordinate system; that...

Why are we unable to see light except if we are looking at the light source or a source that is reflecting the light? For example; say we set up a powerful laser but we cannot see the origin or the end point. The a vacuum is produced in the room to remove all possible particles that might...

Hi, I'm looking for the magnetostrictive properties of bright mild steel (C = 0.15). I'm especially interested in its elongation vs magnetic field strength curve. I've been looking everywhere and can't seem to find any data. Currently I'm busy with my engineering thesis on pulse-echo...

1. Statement: The Real Part of a "Complex Number is expressed as the following: Real(A) = \frac{1}{2}(A + A*) = \frac{1}{2}(|A|e^{j\alpha} + |A|e^{-j\alpha}) = \frac{1}{2}|A|(2cos(\alpha)) = |A|cos(\alpha). (#1) The Imaginary Part of a "Complex Number" is expressed as the following...

Specifically I'm looking for a resource that can provide me with basic material property information for common elastomers such as Neoprene(R) for the purposes of flat gasket joint analysis. Stress/strain curves and other such data would be very helpful. I understand that elastomers material...

I know that y(t) = t x(t) is unstable, for bounded inputs yielding unbounded outputs, but would y(t) = x(t)/ t also be unstable? when t is going in the negative direction? please help. test Monday.

Hello all, I am new on this, I am making a simulation of a microbattery which use Ni(OH)2, Nickel(II) Hydorxide, as the cathode. I am having problems to find the information about the diffusion coeficient and the electrical conductivity of Ni(OH)2. I try in the CRC Handbook of...

I hope some of you know something about transition density functions. I'm wondering if there are some nice properties I can use... Suppose p is a transition density function, defined as follows: p(t,f,a|T,F,A) dF dA := Prob(F<f<F+dF, A<a<A+dA | F(t)=f, A(t)=a). My question: what...

Homework Statement Hello! I'm lost on how to start this, I've got formulas given to me from the text, but I have no idea on how to piece everything together. So I need to use established properties of moduli to show that when \left.\left|z_{3}\right|\neq\left|z_{4}\right|, then...

Hi .. I have looked every where for the properties of this series (TTL) i can't find it anywhere .. any help is much appreciated Thanks

Question about functions and defining new functions. im thinking about a kind of problem where you are given some property of a function, and the solution is to find what functions satisfy that property. for example: f[x+n*2pi]=f[x] for all integer n the solution is the trig functions...

Hi, I am interested in learning more about static charges. I've googled around and read a number of very informative sites; however, I am left with a few questions. (the best site btw is http://www.ce-mag.com/mrstatic.html) After reading (http://www.ce-mag.com/archive/02/01/MrStatic.html)...

Hi there! I am new to this forum and I am not entirely sure I am at the right place. I been having trouble finding information on the characteristics and properties of milk, Any milk will do, but if I were to name a specific kind of milk, whole milk would do or something similar. The...

So I know light is wave-particle. What is the wave part (interference,dispersion,diffraction)? What is the particle part(refraction, reflection, E=hf)? Also what is the difference between the intensity of light and the energy of light? One more, in my book it says doubling frequency would not...

how do we distinguish poles in case of a liquid state magnet ..or do they tend to lose their magnetic property?