Overview
I'm working on a physics exercise and need an explanation and answer to help me learn.
1. in your laboratory, you observe particle A of rest mass 699 MeV/c^2 to be moving in the positive x direction with a speed of 0.5c. It decays into 2 particles B and C, each of rest mass 115Mev/c^2. Particle B moves in the negative x direction with a speed of 0.8c.
a) find the relativisitic total energy of each of the three particles
b)find the velocity(magnitude and direction) of particle C
c) your laboratory supervisor is watching this experiment from a spaceship that is moving in the positive x direction with a speed of 0.635c. what values would your supervisior measure for the velocitis of particles B and C
2. An electron moving at a speed of 0.3c is trapped in an atomic-sized region of width 0.12 nm.
a) what range of values would likely result from a measurement of the speed of the electron?
b) find the de broglie wavelength of the electron and sketch its wave packet