Mass in special relativity what causes these particles to be termed "massless." However, even massless particles have a relativistic mass, which varies with their observed energy in various frames of reference, The invariant mass is the ratio of four-momentum (the four-dimensional generalization of classical momentum) to four-velocity: and is also the ratio of four-acceleration to four-force when the rest mass is constant. The four-dimensional form of Newton's second law is: The relativistic expressions for "E" and "p" obey the relativistic energy–momentum relation: where the m is the rest mass, or the invariant mass for systems, and "E" is the total energy. The equation is
Mercy Multiplied an audio bible featuring the voices of Christian celebrities and testimonies of Mercy Multiplied graduates. In spite of Mercy Multiplied principles of not accepting government funding and providing their program free of charge to their clients, Mercy Ministries Australia was investigated by the Australian Competition & Consumer Commission (ACCC) and found to be in breach of the Trade Practices Act 1997 and guilty of "false and misleading advertising" of their services, including advertising that their program was free of charge when their clients were in fact required to sign over their government welfare benefits. The former directors were required to