A piece of iron of mass 10 g at 120°C is dropped into 1 kg of water at 30°C ($s_{iron} = 0.45 imes 10^3$ J/kg/K, $s_{w

Question

A piece of iron of mass 10 g at 120°C is dropped into 1 kg of water at 30°C ($s_{iron} = 0.45 	imes 10^3$ J/kg/K, $s_{water} = 4.2 	imes 10^3$ J/kg/K). The final temperature of the water is approximately —

Accepted Answer

30.1°C

Answer

35.0°C

Answer

40.0°C

Answer

75.0°C

A piece of iron of mass 10 g at 120°C is dropped into 1 kg of water at 30°C (siron=0.45×103s_{iron} = 0.45 \times 10^3siron​=0.45×103 J/kg/K, swater=4.2×103s_{water} = 4.2 \times 10^3swater​=4.2×103 J/kg/K). The final temperature of the water is approximately —

A piece of iron of mass 10 g at 120°C is dropped into 1 kg of water at 30°C ( $s_{iron} = 0.45 \times 10^3$ J/kg/K, $s_{water} = 4.2 \times 10^3$ J/kg/K). The final temperature of the water is approximately —