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Are the rest mass of the positron and the electron exactly equal?
Wiki User
∙ 12y ago
Yes; they simply have opposite charges.
Wiki User
∙ 12y ago
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What is the mass of an electron approximately equal to?
1/1836 the mass of a proton
What is the ratio of a proton to the mass of a neutron?
The mass of a proton and neutron are pretty close. So the ratio will be roughly 1 to 1 (or 1:1). The neutron is heavier and if memory serves it is exactly the mass of an electron heavier than a proton. Note it takes around 1820 electron to equal the mass of one proton.
Why doesn't the electron contribute to the mass?
They do, it's just such a small contribution that in practice it's usually negligible. It takes about 1800 electrons to equal the mass of one proton.
How does the mass of the nucleus compared to mass of an electron?
The mass of a nucleus varies according to the atomic number (ie according to what element it is). For hydrogen , the simplest nucleus, the combined mass of the one proton and the one neutron would be equal in mass to 3672 electrons.
What is the definition of annihilation in physics?
the conversion of matter into energy, especially the mutual conversion of a particle and an antiparticle into electromagnetic radiation.Above is the definition, that is given for annihilation, on Google.The positron and electron annihilate into two gamma rays.As per the equation of Einstein, you have E = m * C square.Now that the mass of electron and positron is same. So you put the mass of both into the formula.You get 2 E = 2 m * C square.You divide this equation by 2.You get, E = m * C square.That means from one positron, you get one gamma ray.That means from one electron, you get one gamma ray.That means from one gamma ray, you get one electron.That means from 2 gamma rays, you get 2 electrons.( Just multiply the equation by 2.)(Here C is the speed of light. It is very high figure. The square of the speed of light is too high a figure.it's about 300,000,000 m/s. The square of 300,000,000 comes to be 90,000,000,000,000,000.)The electron is supposed to be the smallest mass in the atom. The photon emitted is supposed to be the smallest unit of energy. So if you multiply the one electron by the figure 90,000,000,000,000,00, you get minimum 90,000,000,000,000,000 photons emitted. From the positron also you should get the same amount of energy got released. Gamma ray is high frequency photon emitted. Only two gamma rays are emitted. "Two gamma rays are produced out of the mass of two electrons (or positrons) into energy" is the most not so wise statement I have ever encountered.So the mass to energy ratio just does not match.So either the equation of the Einstein is wrong, or the definition of the annihilation is wrong.Here the definition of annihilation is wrong.The fact is that mass get destructed into nothing in case of annihilation. The gamma rays come from the kinetic energy of the electron and positron. Mathematically one of the two gamma rays is anti-gamma ray and other is gamma ray.It comes that mass of the electron is plus m. The mass of the positron is minus m.The plus m + minus m = 0.So from zero, you get positron and electron.So from zero you get matter and anti-matter.Hence proved.
Is The Mass Of An Electron Is Equal To The Mass Of A Neutrons?
No. The mass of a neutron is far, far, far greater than the mass of an electron. In fact, the mass of a neutron is approximately about 1840 times greater than the mass of an electron. The particle that has exactly the same mass as an electron is its antiparticle, the positron.
Why isn't electron and positron mass equal?
Their masses are equal. It's their charges that are opposite.
How is a positron different from an electron?
A positron is an electron's antiparticle. It has the same mass as an electron, but an opposite electrical charge.
What is the antiparticle of a positron?
The antiparticle of a positron is an electron. Both the positron and electron have the same mass but opposite charge, with the positron having a positive charge and the electron having a negative charge.
What is the mass number of a positron?
The mass of a positron is approximately 9.1093826(16) × 10−31 kg. The positron and the electron are anti-particles of each other, and you can find out more about the positron at the Wikipedia article on that subject. A link to their post can be found below. There is also a link to a related question on the nature of the positron. That's down there, too.
The rest mass energy of an electron positron pair is?
The rest mass energy of an electron-positron pair is equivalent to the combined rest mass of the two particles, according to Einstein's equation E=mc^2. The rest mass energy can be calculated by adding the rest masses of an electron and a positron, which are equivalent to their respective rest masses multiplied by the speed of light squared.
Does positron have a negative charge?
A POSITron has a POSITive charge, hence the name. A positron is an anti-electron; since the electron has a negative charge, the positron has a positive charge.A POSITron has a POSITive charge, hence the name. A positron is an anti-electron; since the electron has a negative charge, the positron has a positive charge.A POSITron has a POSITive charge, hence the name. A positron is an anti-electron; since the electron has a negative charge, the positron has a positive charge.A POSITron has a POSITive charge, hence the name. A positron is an anti-electron; since the electron has a negative charge, the positron has a positive charge.
What is the anti-matter equivalent of an electron?
The anti-matter equivalent of an electron is a positron. Positrons have the same mass as electrons but have a positive charge. When a positron and an electron collide, they annihilate each other, releasing energy in the form of gamma rays.
What particles has the same mass as an electron but a positive charge and is sometimes emitted from the nucleus during radioactive decay?
A positron is a particle with the same mass as an electron but a positive charge. It is the antimatter counterpart of an electron and can be emitted from the nucleus during some types of radioactive decay processes, such as beta plus decay.
Do positrons are similar to electrons?
It's all quite simple. The electron is a subatomic particle carrying a negative electric charge. It has no known components or substructure, and therefore is believed to be an elementary particle.[2] An electron has a mass that is approximately 1/1836 that of the proton. The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1e, a spin of 1⁄2, and the same mass as an electron.
What is the anti-particle of an electron?
The anti-particle of an electron is called a positron. It has the same mass as an electron but carries a positive charge, making it the antimatter counterpart of the electron. When a positron and an electron collide, they annihilate each other, releasing energy in the form of gamma rays.
Which of the following particles has the same mass as an electron but a positive charge and is sometimes emitted from the nucleus during radioactive decay?
The particle that has the same mass as an electron (9.11 x 10^-31 kg) but a positive charge and is sometimes emitted from the nucleus during radioactive decay is a positron. A positron is the antimatter counterpart to an electron and has a charge of +1.
