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0.3 Kg of hot coffee, which is at 70^(@)...

`0.3 Kg` of hot coffee, which is at `70^(@)C`, is poured into a cup of mass 0.12 kg . Find the final equilibrium temperature. Take room temperature at `20^(@)C` .
(`s_(coffee) = 4080 J/kg-K and s_(cup) = 1020 J/kg-K`.)

A

`45^@C`

B

`55^@C`

C

`65^@C`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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