heat energy lost by one body = heat energy gain by other
body
so
Q1=Q2
Q= mc(T2-T2)
now the mass ot the copper block m= (mc delta T)water/(c* delta
T) coppet
                                                         Â
= 0.8*4190*11.8/385*183.7
                                                       Â
=5.49 Kg
                                                        Â
