Physics: A2.64-kg copper part, initially at 400 k, is plunged into a tank containing 4 kg of liquid water, initially at 300 k. the copper part and water can be modeled as incompressible with specific heats 0.385 kj/kg ? k and 4.2 kj/kg k, respectively. for the copper part and water as the system, determine (a) the final equilibrium temperature, in k, and (b) the amount of entropy produced within the tank, in kj/k. ignore heat transfer between the system and its surrounding

I m pretty sure A, and C but I m not very sure about B I hope that helped....

A2.64-kg copper part, initially at 400 k, is plunged

Ответ:

ameliaxbowen7

13.01.2022

Physics

a) $T_f=305.7049\ K$

b) $\Delta S=313.51\ J.K^{-1}$

Explanation:

Given:

mass of copper, $m_c=2.64\ kg$ initial temperature of copper, $T_{ic}=400\ K$ specific heat capacity of copper, $c_c=385\ J.kg^{-1}.K^{-1}$ mass of water, $m_w=4\ kg$ initial temperature of water, $T_{iw}=300\ K$ specific heat capacity of water, $c_w=4200\ J.kg^{-1}.K^{-1}$

∵No heat is lost in the environment and the heat is transferred only between the two bodies:

Heat rejected by the copper = heat absorbed by the water

$2.64\times 385\times (400-T_f)= 4\times 4200\times (T_f-300)$