Planet Bruin in the Treude Galaxy orbits a star within its habitable zone. Electromagnetic radiation from this star has a peak flux on planet Bruin between 400-650 nm wavelength. If photosynthetic organisms evolved on planet Bruin, what color would they most likely appear to our eyes

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?