Ineed with i dont have to textbook that goes with it and i cant figure anything out : (

The “death throes” of stars are amongst the most complex phenomena in all of astronomy, and the “corpses” of stars amongst the most energetic and exotic objects in existence. beginning at the end of the core helium fusion stage in a star’s life, describe in detail the post-main sequence development of both (a) a 1.0 solar mass star, and (b) a 25.0 solar mass star. in what significant ways do they differ? what role does each of these types of stars play in the "star-gas-star" cycle and the evolution of chemical elements in our galaxy?

What is the speed vfinal of the electron when it is 10.0 cm from charge 1?

Which of the following is most likely to be the best conductor of electricity? oxygen chlorine aluminum chromium