Stars go through a life cycle. What is the expected outcome for a star much more massive than the sun?

Big stars, about 5 - 25 times the mass of sun, usually they collect so much of matter and energy that they just explode, this explosion is called supernova. A supernova is a powerful and luminous stellar explosion. This astronomical event occurs during the last evolutionary stages of a massive star.

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a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

current flows in a wire