Physics, 21.09.2019 00:30 PokemonCatchEmAll

Type 1a supernova are the thermonuclear explosions of accreting white dwarfs that approach the chandrasekhar limit. in this problem, consider a white dwarf of mass 1.4 solar masses and radius 10^4 km.
assume the entire star become nickel-56 after the explosion. how long will it take all the nickel-56 to decay into iron-56?

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