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Nuclear and Particle Data

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... of the Universe The Ten Commandments for Amateur Astronomers Other Fun Websites ABOUT US Nuclear and Particle Data Electron Proton Neutron Rest mass[kg] 9.1093897x10 -31 1.6726231x10 -27 1.6749286x10 -27 Molar mass[kg/mol] 5.4857990x10 -7 ...


How come the protons in the nucleus of an atom do not spin around ...

www.physlink.com/Education/AskExperts/ae702.cfm

... electrons do? Asked by: Stephen DeCamp Answer If you mean why are all the protons in the middle with the electrons moving around them, the following explanation might help: The protons and neutrons in the nucleus are made of elementary ...


How are the protons and neutrons held together in a nucleus?

www.physlink.com/Education/AskExperts/ae565.cfm

... This can be described as a "leakage" or "residue" of the colour force between the quarks of the proton and the quarks of the neutron that pulls the proton and the neutron together. This residual colour force therefore manifests itself as ...


Proton May Not Be All That Strange

www.physlink.com/News/060522Proton.cfm

... the number you get is small when compared to the amount of spin a proton exhibits. This mismatch was referred to as the 'spin crisis.' There had to be something else inside the proton giving rise to the rest of the spin. Physicists ...


Since there are such things as anti-electrons and anti-protons, is ...

www.physlink.com/Education/AskExperts/ae117.cfm

... protons and neutrons are not themselves fundamental particles; they are composed of smaller particles called quarks. A proton contains two up quarks and one down quark (uud), and a neutron contains one up and two down quarks (udd). the up ...


What kind of forces hold the protons and neutrons together in the ...

www.physlink.com/Education/AskExperts/ae361.cfm

What kind of forces hold the protons and neutrons together in the nucleus?        Home Reference Education Directories Science eStore Job Board Ask The Experts eGreetings Fun About Us Welcome to PhysLink.com - Your physics and ...


How was the mass of a proton determined?

www.physlink.com/Education/AskExperts/ae309.cfm

... reference materials. Also, check out our fun section!    Question How was the mass of a proton determined? Asked by: David Slochower Answer The mass of the proton was de-termined in a similar way to how the mass of atoms are measured. The ...


Why are there usually more neutrons than protons in a heavy element? ...

www.physlink.com/Education/AskExperts/ae387.cfm

... Answer The reason is that protons, being charged particles, repel each other. As you get to heavier elements, with each new proton you add, there is a larger repulsive force. The nuclear force is attractive and stronger than the electrosta ...


If we have not yet discovered a method of seperating quarks from each ...

www.physlink.com/Education/AskExperts/ae609.cfm

... collide, decay, and in general interact. Quarks have never been observed directly, but every particle that a neutron or a proton can decay into can be explained in terms of "quark channels." These "channels" are simply different combinatio ...


Why don't the proton and the electron in a hydrogen atom ...

www.physlink.com/Education/AskExperts/ae688.cfm

Why don't the proton and the electron in a hydrogen atom collapse?        Home Reference Education Directories Science eStore Job Board Ask The Experts eGreetings Fun About Us Welcome to PhysLink.com - Your physics and astronomy ...


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