Final answer:
The three components of a discrete trail are Alpha, Beta, and Gamma. Alpha particles consist of two protons and two neutrons with a positive charge, whereas Beta particles are high-energy electrons or positrons. Gamma rays are high-frequency electromagnetic waves.
Step-by-step explanation:
In physics, the three components of a discrete trail are Alpha, Beta, and Gamma. These three components refer to the different types of radioactive emissions. Alpha particles are made up of two protons and two neutrons and have a positive charge. Beta particles are high-energy electrons or positrons emitted from the nucleus. Gamma rays are high-frequency electromagnetic waves.