An insulated container is filled with ice at `0^(@)C,` and another container is filled with water that is continuously boiling at `100^(@)C.` In series of experiments, the container connected by various, thick metal rods that pass through the walls of container as shown in the figure-4.46.
In the experiment- I: A copper rod is used and all ice melts is 20 minutes.
In the experiment - II: A steel rod of identical dimensions is used and all melts in 80 minutes.
In the experiment-III: Both the are used in parallel all ice melts in `t_(10)` minutes.
In the cxperiment-IV: Both rods are used in parallel all ice melts in `t_(20)`

An insulated container is filled with a mixture of water and ice at t_c = 0^@C . Another container is filled with water that is continuously boiling at t_h = 100^@C . In a series of experiments, the containers are connected by various thick rods that pass through the walls of the containers (see the diagram). The rod is insulated in such a way that there is no heat loss to surroundings. In experiment 1, a copper rod is used, and the ice melts in T_1 = 2 min. In experiment 2, a steel rod of the same cross section is used, and the ice melts in T_2 = 6 min. How long ( in min) would it take to melt the ice if the two rods are used "in series"?

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