Difference Definition and 1000 Threads

V=Vo √1-(x^2/a^2) X is the distance of the spring's stretch, but how would you rearrange the equation if you are looking for Amplitude? They both use the same units (meters) as far as I am concerned. Help would be appreciated, thanks; I am still a beginner with Physics.

We studied random walk starting from a probability conservation : p(x,t)=p(x+dx,t+dt)+p(x-dx,t+dt) Which means the particle can go left or right by dx in time dt. The solution of the differential equation starting from a delta is a gaussian, which means the particle could go apparently at...

Would anybody pleas tell me what's the difference between fine and coarse measurement? I am reading a paper named "Electronic distance measurement-An introduction" in which fine measurement and coarse measurement is mentioned. here is the exact paragraph: "The transmitter includes a master...

At M.V. (10.5KV), what is the difference in material between 1250A, 40KA busbar & 1250A, 50KA?

Homework Statement Neutrinos with energy of about ##1 GeV## are measured in an underground detector and compared with simulations of neutrinos produced in the atmosphere. Measured flux of upward going muon neutrinos ##(\nu_\mu + \bar \nu_\mu)## is half compared to simulations while measured...

Homework Statement Our setup: Connect the transformer to an LRC-series circuit(L= 2mH with iron core,C=1mF and R=10Ω). Use the 2V and 6V outputs of the transformer, the effective voltage supplied by the transformer will then be 2 V. Use the digital multimeter to measure the effective...

what is difference discrete and digital signal

Homework Statement Find the potential difference Va-Vb between points a and b. Homework EquationsThe Attempt at a Solution Each capacitors left plate will have difference amount of positive charge and right plate will have negative charge. After that i don't know how to proceed.

They both produce H+ right? How do I tell the difference in a reaction?

Homework Statement What is the difference between this statement being expressed in z-notation and the notation shown? What are the benefits of the two and how do you do the conversion? Nevermind about answering the question itself. if X ~N(mu,sigma) show that P(|X-mu|<= 0.675*sigma) = 0.5...

i want to know the basic difference between simple harmonic wave and stationary wave. and also why stationary wave is type of distructive interference. if stationary wave is a type of distructive interference so why stationary wave exist.

I read in a book "Optoelectronic Integration: Physics, Technology and Applications" edited by Osamu Wada. Ballistic Conduction and Superconductivity are both electron transport that are not affected by the collisions and scatterings. Ballistic conduction or Ballistic transport occurs when the...

I only memorized these trigonometric differential identities : `sin(x) = cos(x) `cos(x) = -sin(x) because I can convert tan(x) to sin(x) / cos(x) and sec(x) to 1 / cos(x) .. etcAnd there is no need to memorize some integral identities such as : ∫ sin(x) dx = -cos(x) + C ∫...

Me and my grandfather got into a "debate" (more like one-sided argument) on whether objects fall at the same rate on Earth independent of air resistance or not. He claims that "If you drop 2 objects from an airplane -- like a car and a marble, both objects would hit the ground at the same...

Homework Statement Why is is that when we look in a mirror we expect to see a reflection equally as bright as the real image, but when we stand in front of a cliff and clap our hands we don't hear an echo as loud as the original sound? Homework Equations R = (z2 - z1)/(z2 + z1) The Attempt at...

I found this one interesting: http://nextshark.com/one-comic-perfectly-sums-up-class-differences-in-society/

I had these code in this forum but comes out error as below, any suggestion? Error 1 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int c:\users\username\documents\visual studio 2010\projects\fdm 001\fdm 001\explicit 001.cpp 27 Error 2...

I understand how to do calculations involving potential difference but I've never been able to find any information that helps me understand what is physically happening to cause it. My assumption is that for a PD to occur, there must be a build up of charge to cause the difference in...

What is the difference between a vector and a vector space? I get that a vector is an object with both magnitude and direction, but am confused by the term "vector space". Does a vector space simply refer to a collection of vectors? Thanks!

In our textbook it is written that -voltmeter measures the electrode potential difference between 2 half cells (in an electrochemical cell) (electrode potential refers to the potential difference between electrode and its salt solution in which it is dipped) it should come-voltmeter measures...

As far as I know only 2 % of human genome can make the proteins (protein-coding DNA) while the major part of DNA mainly produces mRNAs that regulate other genes (regulatory RNAs). I would like to know – are these two kinds of mRNAs comparable in size, that is in the amount of their nucleotides...

Was wondering what is the difference between the 2nd and 3rd ed of Physics by Resnick and Halliday? I know for the most part, at least for mathbooks, the earlier edition the better, and that there is ussually few changes in newer edition. However, I already own the 2nd edition (Blue Cover) and...

Hi, Please could you explain the difference between a subsonic Pitot tube and supersonic one Thanks

I understand how to find a difference quotient, but afterwards it asks me to then evaluate or approximate each limit, is that just by plugging in the given limit or is there another step?

Homework Statement In a TV tube, an electric potential difference accelerates electrons from a rest positive towards a screen. Just before striking the screen, the electrons have a wavelength of 1.0⋅10-10. Find the electric potential difference.Homework Equations [/B] Should I use these...

Homework Statement A Michelson interferometer is illuminated with a laser with a wavelength of 514.5nm. A Haidinger fringe pattern is photographed with a lens of focal length 55mm. The diameter of the two adjacent circular fringes in the image are 1.53mm and 2.62mm. How far would the mirror...

Homework Statement A Michelson interferometer is illuminated with a laser with a wavelength of 514.5nm. A Haidinger fringe pattern is photographed with a lens of focal length 55mm. The diameter of the two adjacent circular fringes in the image are 1.53mm and 2.62mm. How far would the mirror...

I noticed that uniform continuity is defined regardless of the choice of the value of independent variable, reflecting a function's property on an interval. However, if on a continuous interval, the function is continuous on every point. It seems that the function on that interval must be...

I realize this question has arisen before in the following thread: https://www.physicsforums.com/threads/difference-between-heat-and-work.461711/ but I felt there may be more room for discussion. I feel that the nature of the effect of heat on physical systems is a rather deep one. If the flow...

Homework Statement I just need help understanding what establishes a positive charge on the top conductor in C1: http://imgur.com/fppHtMN My book says that first there is a positive potential difference, Vab Homework EquationsThe Attempt at a Solution So since Vab is positive, a is at a...

Homework Statement Given the following difference equation; x(k+2)-x(k+1)+0.25x(k)=u(k+2) where x(0)=1; x(1)=2; u(k)= 1 for k=1,2,3,… Homework Equations Z- transformation The Attempt at a Solution To be able to solve this difference equation, I think I need to transform it into z domain...

Hello, I realized this semester I will receive an A- in Quantum 2 which I am not feeling so happy about. Currently, my major gpa is roughly about a 3.93-3.94 in physics and about a 3.9-3.92 in math. I feel slightly like a failure as I am unable to maintain a 4.0. Do I still have a shot to being...

Hello! I have a question concerning the functioning of a pH meter. All the sources online that I can find either omit, I think, important information, or describe it in "technical terms" with equations. I would like to know what is happening at the level of the distribution and movement of...

Homework Statement Check the Picture Homework EquationsThe Attempt at a Solution I've never dealt with a three-cell circuit before. For calculating the current, I tried doing Kirschoff's Voltage Law, all I kept getting was that I1 = negative I2. I tried taking the current as coming out of the...

Hello, I'm a PhD student in medical biology and am doing experiments with bloodvessels. I've modified an existing technique and getting unexpected results (ofcourse..). I think it is due to a pressure difference but my knowledge of physics is inadequate to be sure. Ill give a short explanation...

hi dear i have a question. i have equation (1/α ) dT/dt =d2T/dr2 +1/r dT/dr +d2T/dz T=T(r,z) T(Ri,z)=Ti T(Ro,z)=To T(r,0)=To dT(r,L)/dz =0 by finite difference method O(h^3) and this question's MATLAB program. is there anyone who can do it ? it is very important for me tnx

Hi, Please explain what is the difference b/w kinematics friction and static friction ? Please explain, what is rolling friction ? Is it when we are pulling a weight with rope, and rope is rolling on a wheel ? for example in past days, people used rope to get water from well. Please explain...

Homework Statement In rotational motion, the tangential velocity is defined as alpha multiplied the radius, When an object is rolling without slipping, the acceleration of the center of the mass is defined as alpha multiplied by the radius. How, if at all, are these two alphas different...

So this is the problem that I got on LonCapa: 1. An electron starts from rest 66.1 cm from a fixed point charge with Q=-0.120 μC. What total potential difference accelerates the electron from being very far away from Q? I understand the equation that I have to use, which is V=k*Q/R. I plugged...

I am from India ,pursuing electronics and communication degree...i wanted to do my MASTERS in USA..but but when i searched for courses for masters i only found courses for "computer science" and "electrical " ...I wanted to get masters degree in electronicsbranch...some fields like: 1.chip...

Homework Statement Our teacher said we can NEVER do an F=ma problem from an accelerating, or noninertial frame. (He said there are ways to do it, but we can not do it in his class), and I'm confused becuase often times he makes the "system" or makes a "free-body diagram" around an accelerating...

Reading http://www.aei.mpg.de/~rezzolla/lnotes/mondragone/collapse.pdf The reasonning looks like it should generalize from pressureless dust to a matter-radiation mix, and presumably also works with a (small) cosmological constant thrown in, as in a Schwarzschild-de Sitter solution - is that a...

kindly help me with a detailed explanation?

Homework Statement Light with wavelength 100nm is incident perpendicularly from air on a film 0.500μm thick and with refractive index 2.5. Part of the light is reflected from the first surface of the film, and part enters the film and is reflected back at the second surface, where the film is...

Homework Statement Homework Equations V=IR (Voltage = Current x Resistance) Possibly Kirchoff's Loop Rule but I'm not really sure how to use it The Attempt at a Solution I looked at something else on line and ended up doing 9 - 0.7(3) - 6 - 2(3) which got me the right answer for the first...

Homework Statement Point charges q and Q are positioned as shown. If q= +1.0 nC, Q = -2.0 nC, a = 3.0m, and b = 4.0m, what is the electric potential difference, Va - Vb? **The question with the diagram is also attached ** Homework Equations V = ke (q/r) The Attempt at a Solution V =...

1. The figure shows two point sources S1 and S2 that emit sound of wavelength λ = 1.8 m. The emissions are isotropic and in phase, and the separation between the sources is d = 18.0 m. At any point P on the x axis, the wave from S1 and the wave from S2 interfere. Start with P very far away (x =...

Hello what'a difference between tem wave and plane wave? I think in tem is the same as plane wave but it's electromagnetic amplitude decrease ,is it right?if yes how does amplitude decrease?

My physics book mentions that a stars luminosity is its total power output at all wavelengths and that absolute magnitude is defined as inherent brightness and NOT luminosity. It then mentions that two stars of the same power output have the same absolute magnitude. Since luminosity is the...

This is regarding difference equations and their solutions. And to be specific, this is about linear constant coefficient difference equations. I read at one place, that the general solution of it can be expressed as sum of homogeneous equation and the particular solution. And at another place...