How can we calculate a rest mass? - Physics Forums
2007年10月8日 · This means that an object's rest mass is directly proportional to its energy. How can we calculate an object's rest mass? The rest mass of an object can be calculated using the equation m = E/c², where m is the rest mass, E is the object's energy, and c is the speed of light. Can an object's rest mass change? An object's rest mass cannot change.
Negative Rest Mass: Faster than Light? - Physics Forums
2008年4月1日 · Negative rest mass refers to the concept of particles having a rest mass that is less than zero. This means that the mass of the particle is not only less than the speed of light, but also in a negative direction. Is it possible for something to have negative rest mass? Currently, there is no evidence to suggest that anything in the universe ...
Do Phonons Have Momentum and Rest Mass? - Physics Forums
2009年5月14日 · What is Rest Mass? Rest mass is the mass of an object when it is at rest. It is a fundamental property of matter and is independent of an object's speed or motion. The rest mass of an object is also known as its invariant mass. How are Phonons related to Momentum? Phonons are related to momentum through the concept of wave-particle duality.
Calculating the Rest Mass Energy of One Mole of Neutrons
2009年3月9日 · No, the rest mass energy of a neutron does not change. It is a constant value that remains the same regardless of the neutron's velocity or location. How does the rest mass energy of a neutron compare to other subatomic particles? The rest mass energy of a neutron is slightly greater than the rest mass energy of a proton, but significantly ...
Is there a difference between rest mass and invariant mass?
2014年12月20日 · Rest mass refers to the mass of an object when it is at rest, while invariant mass is the mass of an object regardless of its state of motion. In other words, rest mass is dependent on an object's velocity, while invariant mass remains constant. Why is it important to distinguish between rest mass and invariant mass?
Why does a photon have zero rest mass? - Physics Forums
2009年10月5日 · The equation E=mc^2 shows that energy and mass are equivalent, and the energy of a photon is directly proportional to its frequency. Therefore, photons can exist without having rest mass. Can photons be affected by gravity if they have zero rest mass? Yes, photons can be affected by gravity, even though they have zero rest mass.
Atomic Physics - rest mass of Deuterium - Physics Forums
2009年11月14日 · The rest mass of Deuterium, also known as heavy hydrogen, is approximately 2.01410178 atomic mass units (u) or 3.34358348 × 10^-27 kilograms (kg). How is the rest mass of Deuterium determined? The rest mass of Deuterium is determined using a mass spectrometer, which measures the mass-to-charge ratio of different isotopes present in a sample.
Rest Mass Definition: What is E=MC2? - Physics Forums
2014年10月3日 · The "rest mass" is the mass of an object measured in a frame of reference that is stationary with respect to the object. The mass may be "moving around" in some other reference frame, but it still has rest mass - therefore rest mass can be energy that is moving around. Note: ##E=mc^2## just means that mass is a form of energy.
Exploring the Relationship Between Rest Mass and Energy in Objects
2017年2月28日 · The relationship between rest mass and energy in objects is described by Einstein's famous equation, E=mc^2, where E represents energy, m represents rest mass, and c represents the speed of light. This equation shows that energy and rest mass are equivalent and can be converted into one another.
Assumption that the rest mass energy is mc^2 - Physics Forums
2017年6月18日 · The mass of these new atoms is slightly less than the mass of the original atoms, and this difference in mass is converted into energy according to the equation E=mc^2. This is the principle behind nuclear power and nuclear weapons. 5. Is the assumption that the rest mass energy is mc^2 universally accepted by scientists?