1.Assume free propagation of the cosmic rays (CR) across the Galactic disk (d=500 pc). Estimate the residence time of the CRs in the disk.
 

2.Assume diffusive propagation of CRs at 10 GeV with diffusion coefficient D(10 GeV) =5x1027 cm2/s. Estimate: a) mean free path; b) residence time in the disk; c) anisotropy (assume dipole type of anisotropy and apply Fick’s low).
 

3. Find energy dependences of the above (a-c) measures for the power-law turbulence spectra with indices = 1; 1.7; 2.