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Yes. Neither photons nor gluons have a rest mass. Assuming gravitons exist, they would also be massless. The only gauge particles that we know of that have mass are the W and Z bosons, which are the gauge particles for the weak force. (it's possible that "dark energy" is a fifth force with its own gauge particles; if so, these gauge particles could be either massless or not).
The mass of neutrinos is so small that for a long time it wasn't known whether they were massless or not. (The observation of neutrino oscillation tells us that they do have mass; we still don't know exactly what their masses are, we just know it can't be precisely zero.)
All subatomic particles, even photons and gluons, have a ''relativistic'' mass, however. This is their energy expressed as a mass-equivalent (according to E = mc2).
What else can I help you with?
Which sub-atomic particle cannot change?
The sub-atomic particles does not change is electron. Electron not remains negatively charged but its mass remains the same too.
Sub atomic particle with an atomic mass unit of 1?
Either a proton or neutron has an atomic mass of 1. An electron's mass is actually extremely small in comparison. The majority of the weight of an atom is in the nucleus.
What is a sub atomic particle having an approximate mass of 1 amu and a relative charge of one plus?
Proton.
Which particale has a mass of approximately one atomic mass unit and a unit positive charge?
The particle with one unit of positive charge is Proton. Answer Proton
What type of particle has an atomic number of 1 and a mass number of 1?
Of the common sub-atomic particles, both the proton and the neutron have mass numbers of 1.
What is the atomic mass-?
The atomic mass is the mass of a molecule, atomic particle or sub-atomic particle.
What sub atomic particle does not particitpate in the calculation of mass of atom?
Mass of electron is not included for the calculation of mass of an atom.
Which sub-atomic particle cannot change?
The sub-atomic particles does not change is electron. Electron not remains negatively charged but its mass remains the same too.
Which sub atomic particle makes up most of the mass of atom?
These particles are proton and neutron.
Sub atomic particle with an atomic mass unit of 1?
Either a proton or neutron has an atomic mass of 1. An electron's mass is actually extremely small in comparison. The majority of the weight of an atom is in the nucleus.
What is a sub atomic particle having an approximate mass of 1 amu and a relative charge of one plus?
Proton.
Is an electron a sub atomic particle?
Yes.
What is the negative subatomic particle in an atom is called?
Negatively charged sub-atomic particle: electron. Positively charged sub-atomic particle: proton. Neutrally charged sub-atomic particle: neutron.
Which atomic particle has an atomic mass of one amu but no net charge?
This atomic particle is the neutron.
What is the neutral sub-atomic particle of an atom?
neutron
What an electron?
Negatively charged sub atomic particle
Who invented the sub-atomic particle?
baka ako? :))
