Calculate the stars change in absolute magnitude

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Reference no: EM13253292

A protostar has a temperature of 3000 K,radius of 2*10^8 km at stage 4. At stage 6, it has a temperature of 4500 K and a radius of 1*10^6 km. Calculate the star's change in absolute magnitude as it evolves from stage 4 to stage 6.

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