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Mekdlawit

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Qb=mb.cb.(T-450) Qa=ma.ca.(T-300) Cb=2Ca Qlost=Qgain mbcb(T-450)=maca(T-300) Cb.(T-450)= Ca.(T-300) 2Ca.(T-450)=Ca.(T-300) 2(T-450)=(T-300) 2T-900=T-300 T=600k

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