Find the resistance of a wire of 10m in length & resistivity = 3.14x10 ohm, and its radius = 1mm & Find R of one meter. If 5m from this connected in parallel with another wire of 0.250 ohm. I of the source 6A find I in each wire

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?