1 1. Centipedes are the only arthropods with poison claws for subduing prey. 2  2. Centipedes do not have 100 legs. 3  3. Centipedes have one pair of legs per body segment. 4  4. All centipedes are predators. 5  5. Centipedes can live for several years. 6  6. Centipedes can regenerate lost legs. 7  7. Some centipedes care for their young.
Beta Particle Definition: An electron or positron. The term is generally applied to an electron or positron emitted in radioactive beta decay.
The velocity of beta particles and the calculation of the kinetic energy of beta particles. The mass of a beta particle (electron) = 9.11 x 10-31 kg, typical beta particle speed is 90% of the speed of light (0.9 c). This calculation ignores relativistic effects (relativity theory) whereby the mass of a particle dramatically increases, the nearer its velocity is to that of light. (Note that the mass of a beta particle with a speed of 0.9 c is 2.09 x 10-30 kg).