Consider a block of copper of radius 5 cm. Its outer surface is coated block. How much time is required for block to cool down from 1000K to 300 K? Density of copper =9xx10^(3)" Kg"//"m"^(3) and "Sp ht"=4(KJ)/(Kg-K)

Consider a block of copper of radius 5 cm. Its outer surface is coated

1.	Consider a block of copper of radius 5 cm. Its outer surface is coated block. How much time is required for block to cool down from 1000K to 300 K? Density of copper =9xx10^(3)" Kg"//"m"^(3) and "Sp ht"=4(KJ)/(Kg-K)
Answer» 30 HRS 16 MIN 35 hrs 16 min 40 hrs 20 min 15 hrs 12 min Answer :B