Attraction Definition and 305 Threads

Homework Statement What is the force of attraction between a proton and an electron in a hydrogen atom, if they are 5.00 x 10^-11m apart? Homework Equations F=kQ1Q2/r^2 The Attempt at a Solution I really don't know where to go from here since i don't know the charge of the proton...

What causes the attraction between electrons and protons in the nucleus? I've always assumed the attraction and worked from there, but I was curious if anybody knows what the root cause of this attraction is.

all i can find on the internet are the attractive and repulsive forces between 2 magnets... where can i find the relationship between distance and attractive force , between a magnet and i.e. a piece of iron?

If it is electrical, why is there attraction between atoms? Shouldn't they repel each other due to outer electrons?

Each mass in the figure below is 2.00. Find the magnitude of the net gravitational force on mass A due to the other masses in figure b (the square). Figure: http://i.imgur.com/fjSgU.jpg attempt: i used the formula F=G [(m1*m2)/r^2]. all of the forces are in the direction of D so i...

The book says..bodies experience mutual gravitational attraction with each particle of the earth... In the picture... the vector from the apple pointing to the center of the earth.. is that the attractive force of by the Earth attracting the apple? and what about the vector pointing from...

Homework Statement I'm having trouble understanding charges on Earthed plates I think. I know the answer for this question is that the ball will be attracted to the high voltage plate and stay there but I do not know why is that. Homework Equations A light metal ball is suspended between...

It is possible for a permanent magnet to be attracted to a cooled superconductor magnet as shown in many experiments, but why does it not attract the permanent magnet to the point that their surfaces come in direct physical contact similar to the attraction that causes two permanent magnets join...

It's been a while since I've met a girl I'm actually very attracted to and feel some kind of connection with, on a personal level. This is largely due to me not being out much and even more due to me not making the effort to try connecting at some level with the person in question. Why? At some...

hi,guys do you know when the coin will fall from a magnet and when would it stay on it?

If the electrons in an atom are negatively charged, and the nucleus is positively charged, what keeps them from coming together? I know that the old model of an atom as a tiny solar system is long obsolete, but still, there is supposed to be some discrete space between the electron structure...

An electron absorbs a photon. Can this be termed as attraction of some kind?

Hello! Just so you know, I am a high school student. I am asking about this because I am an IB student and doing an extended essay (it's basically research, and a bunch of experimentation to answer a research question) on something related to magnetic fields, ferromagnetic materials, or...

Is attraction always viewed as some kind of exchange of particles?

Given that the Lorentz force on a current when E=0 exists only at right angles to the current, such would not change the speed of the current, but only its direction. Also, when the current is parallel to a magnetic field line, no deflection of the current by the magnetic field occurs. A magnet...

im looking for a tutorial about an assignment and its says find the force of attraction but i can't understand them. here is the problem: the teacher gave us this formula f=g x m1 x m2 /d 2(squared) g=9.8 m/s2(squared) m1=1000 kg m2=2000 kg d= 2m im looking for the force attraction how...

If one day gravitons are discovered, would their action be complementary to the gravitational attraction due to curved spacetime? Can gravity arise from both curved spacetime and exchange of gravitons? IH

Okay I have a really odd question that might be difficult to answer. I have searched for an answer in several physics books and websites and don't think I have come across a specific answer for this question. Suppose I were to send a negative electromagnetic charge through a solenoid and want...

This one? http://geophysics.ou.edu/solid_earth/notes/mag_basic/mag_basic.html or this one? http://www.Earth'sci.unimelb.edu.au/ES304/MODULES/MAG/NOTES/monopole.html

What is the mechanism for explaining the different effect of repulsion and also attraction due to the exchange of virtual photons in the electromagnetic forces? For example, the electrostatic force between two point charges, for both when they are oppositely charged and like charged?

1.The question Two point masses m_{1} and m_{2} are initially at rest. Distance between them is 'd'. How much time does it take for them to collide due to mutual gravitational attraction?2. Relavant Equations: F = \frac{Gm_{1}m_{2}}{r^2} \ \mu = \frac{m_{1}m_{2}}{m_{1}+m_{2}}Attempt at a...

Could anyone tell me how to exactly prove that the distance between two objects squared is inversely proportional to the attraction force between them? Thanks.

Does anyone know how Newton knew that the force of attraction between two objects is inversely proportional to the distance between the two objects.

Is the combination of an positive sodium with a negative chlorine neutral ? If so, what attracts and holds together other sodiums and chlorines to make a grain of salt ?

Has anyone (here) ever tested the law of attraction?

Homework Statement Two charged particles q1 and q2, both of m=10g: q1-----O----------q2 |-5cm-||----10cm--| q1=4 microC q2=-2 microC Find the velocity of q1 when it passes O. Homework Equations (for some reason latex isn't working on my browser) a=dv/dt=(dv/dx).(dx /t)=v.(dv/dx) Both...

Sorry to start yet another thread on the basics of magnetism, but I'm missing something... Glancing through an introductory college physics textbook, the three chapters on magnetism are missing something ...and it is the one thing that every normal person thinks of when they here the word...

Human body is mass having energy. thanks to Joule it is proved. Newton explained First, Second and Third laws. Now, 1. Two equal amount of forces in opposite direction at a given time may not move the OBJECT as per third law of Newton. This is horizontal pull like Tug-of-War. Here 'x'...

Gravity is important over long ranges as it is always attractive. Gravity has an analogue to magnetism called gravitomagnetism. Is it always attractive? Could "dark matter" or MOND be explained as gravitomagnetism? i.e if gravitomagnetism is always attractive and additive, what is its...

Hi, Pls I'd like to find out if 2 electrical charges (same charge but different voltages) would attract or repel. For example -600VDC and -100VDC. I've always thought like charges repel and unlike charges attract. But I'm reading up on something that says the above would attract and become...

At what distance do unlike-charged ions stop attracting and start repelling? (I assume it can not keep attracting forever, unless outside force is applied to it). At what distance do neutrally charged atoms start repelling each other? (Some momentum carrying them toward each other) I've...

Why does an iron nail always get attracted to a bar magnet? You think one side would attract it and on side would repel it, Is this because When I bring the magnet close to the nail does it causes the domains to flip so it attracts it, Is this similar to why a neutral object gets attracted to a...

Homework Statement A student proposes to measure the gravitational constant G by suspending two spherical objects from the ceiling of a tall cathedral and measuring the deflection of the cables from the vertical. Draw a free-body diagram of one of the objects. If two 100.0-kg objects are...

hello :D Neglect the effect of rotation of the earth. Suppose the Earth suddenly stops to attract objects placed near its surface. A person standing on the surface of the Earth will <a>fly up <b> slip along the surface <c> fly along a tangent to Earth's surface <d> remains standing...

Hi, I am needing some guidance to find a way to calculate the repulsion or attraction force between (magnet/magnet) or (magnet/coil) in kg force. I know there is not a fast or easy answer to this but you will help me a lot if you can help me finding the way to calculate it. thanks for your...

Homework Statement In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 4 m/s up a 20 degree inclined track. The combined mass of monkey and sled is 20 kg and the coefficient of friction between the sled and incline is .20. How far up the incline do the...

Hi All, Is there any way of explaining the attraction between North and South poles of two magnets without making use of energy considerations? Best wishes DaTario

Homework Statement Two masses are in space. At a certain separation, the two masses have a force of gravitational attraction of 6.88 x 10 21N Determine the new force of attraction if the separation distance between the two masses is tripled, and mass of one object is reduced by half. Homework...

This has been discussed to death around here I imagine - Cooper pairs and whatnot - so I'll try to be specific and not ask too broad of a question here. I did a little work with superconductors and I'm working on a passage for my thesis. I'm trying to provide background on Type I and Type II...

Hi, I am currently enrolled in a physics 101 class and I am trying to understand a concept/question. "If the sun collapsed into a black hole, the Earth gravitational attraction would be a.same,b.more,c.less,d.none of these I don't even know where to start, we never even went over black...

Homework Statement A single proton and a single electron are fixed at a distance of 2.8 meters from each other. Find the magnitude of the electric force of attraction between them. i have the answer to this, it is: 2.93*10^-29 but now it asks: Find the magnitude of the gravitational...

Homework Statement Two asteroids of 1.0x107kg and 6.0x107kg respectively, are initially at rest in interstellar space separated by a large distance. Thier mutual gravitational attraction then causes then to fall toward each other on a straight line. Assume the asteroids are spheres of radius...

One popular and credible theory on the overall shape of the universe is the positively curved universe. In my mind that is the 3-sphere which is connected and finite sort of like in the balloon analogy. And the following discussion regards such a universe I think. As I understand the regular...

Hello everyone, I have been stuck on this geophysics question I have for one of my classes and I really need some help with it. Can anyone solve this question. If you do, please show me how because I am really stuck here. I am stuck on both a and b. Click the link below to see the question...

Many sources on basic gravity, like this quote from Wikipedia, say: “In the case of a spherically symmetric mass distribution we can conclude (by using a spherical Gaussian surface) that the field strength at a distance r from the center is inward with a magnitude of G/ r^2 times only the...

I was wondering what equations govern calculating the gravitation attraction of a massive particle (say a proton) traveling at near light speed? Thanks!

I am doing a challenge problem. Can you tell me if I am correct in my reasoning, and help me out with what I am asking? Thanks! I used Coulomb's law to find the force of attraction between Be2+ and S2- in BeS and between Be2+ and O2- in BeO. Radius(Be) = 59 pm Radius(S) = 170 pm...

Attraction between nuclei and electron in QED is the most simply described with Feynman's diagram and calculation, when an electron fastly flow close to a nuclei. (?? scattering) 1. But how, in QED, to describe attraction between almost standstill electron and nuclei. In classical physics...

yet...more electrical attraction :) hello everyone i posted a question erleair about electrical attraction, and the answers were really helpful, i hope i can help me with this too here's the situation, i have a circiut with a battery of 100 volts and a capacitor having "100 Micro farad, 100...

hello engineers i have a question about electrical attraction... i if had 2 plates, each of area 5cm2, one of them holding the charge of 3x10-4 coulomb and the other holding the same but negative charge (-3x10-4 coulomb), and the distance between the 2 plates was 1 meter, how can i find the...