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- https://phys.libretexts.org/Bookshelves/University_Physics/Mechanics_and_Relativity_(Idema)/13%3A_Position_Energy_and_Momentum_in_Special_Relativity/13.04%3A_Relativistic_EnergyThe relativistic energy of the particle is an energy contribution due to the mass of the particle.
- https://phys.libretexts.org/Courses/Muhlenberg_College/MC%3A_Physics_121_-_General_Physics_I/05%3A__Relativity/5.10%3A_Relativistic_EnergyThe rest energy of an object of mass m is \(E_0 = mc^2\), meaning that mass is a form of energy. If energy is stored in an object, its mass increases. Mass can be destroyed to release energy. Relativi...The rest energy of an object of mass m is \(E_0 = mc^2\), meaning that mass is a form of energy. If energy is stored in an object, its mass increases. Mass can be destroyed to release energy. Relativistic energy is conserved as long as we define it to include the possibility of mass changing to energy. At extremely high velocities, the rest energy \(mc^2\) becomes negligible, and \(E = pc\).
- https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_III_-_Optics_and_Modern_Physics_(OpenStax)/05%3A__Relativity/5.10%3A_Relativistic_EnergyThe rest energy of an object of mass m is \(E_0 = mc^2\), meaning that mass is a form of energy. If energy is stored in an object, its mass increases. Mass can be destroyed to release energy. Relativi...The rest energy of an object of mass m is \(E_0 = mc^2\), meaning that mass is a form of energy. If energy is stored in an object, its mass increases. Mass can be destroyed to release energy. Relativistic energy is conserved as long as we define it to include the possibility of mass changing to energy. At extremely high velocities, the rest energy \(mc^2\) becomes negligible, and \(E = pc\).
- https://phys.libretexts.org/Bookshelves/Modern_Physics/Spiral_Modern_Physics_(D'Alessandris)/2%3A_The_Special_Theory_of_Relativity_-_Dynamics/2.1%3A_Relativistic_Momentum%2C_Force_and_EnergyOnce Einstein revolutionized our understanding of space and time, physicists were faced with a monumental task. All of physics, before Einstein, was based on the idea of absolute space and time. Once ...Once Einstein revolutionized our understanding of space and time, physicists were faced with a monumental task. All of physics, before Einstein, was based on the idea of absolute space and time. Once these concepts were found to be erroneous, all of classical physics had to be re-examined in this light. In this section, we will “re-examine” our understanding of momentum, force, and energy.
- https://phys.libretexts.org/Courses/Grand_Rapids_Community_College/PH246_Calculus_Physics_II_(2025)/14%3A__Relativity/14.10%3A_Relativistic_EnergyThe rest energy of an object of mass m is \(E_0 = mc^2\), meaning that mass is a form of energy. If energy is stored in an object, its mass increases. Mass can be destroyed to release energy. Relativi...The rest energy of an object of mass m is \(E_0 = mc^2\), meaning that mass is a form of energy. If energy is stored in an object, its mass increases. Mass can be destroyed to release energy. Relativistic energy is conserved as long as we define it to include the possibility of mass changing to energy. At extremely high velocities, the rest energy \(mc^2\) becomes negligible, and \(E = pc\).
- https://phys.libretexts.org/Courses/Muhlenberg_College/MC_%3A_Physics_213_-_Modern_Physics/01%3A__Relativity/1.10%3A_Relativistic_EnergyThe rest energy of an object of mass m is \(E_0 = mc^2\), meaning that mass is a form of energy. If energy is stored in an object, its mass increases. Mass can be destroyed to release energy. Relativi...The rest energy of an object of mass m is \(E_0 = mc^2\), meaning that mass is a form of energy. If energy is stored in an object, its mass increases. Mass can be destroyed to release energy. Relativistic energy is conserved as long as we define it to include the possibility of mass changing to energy. At extremely high velocities, the rest energy \(mc^2\) becomes negligible, and \(E = pc\).
- https://phys.libretexts.org/Bookshelves/Modern_Physics/Spiral_Modern_Physics_(D'Alessandris)/1%3A_The_Special_Theory_of_Relativity_-_Kinematics/1.8%3A_Length_Contraction_and_the_Magnetic_Force__(Project)certain objects that are neutral in one frame of reference are actually electrically charged in other frames of reference due to length contraction. Moving charges (and hence electric currents) see th...certain objects that are neutral in one frame of reference are actually electrically charged in other frames of reference due to length contraction. Moving charges (and hence electric currents) see these “charged-because-of-length-contraction” objects and feel electric forces of either attraction or repulsion. However, in our frame the objects are neutral so we “invent” a new force, magnetism, to make sense of the behavior of these moving charges.
