What is the resistance of a 1.3 m copper wire (p = 1.7 x 108 o·m) that has a
cross-sectional area of
8.36 x 10-6 m2? Use R
pl
А
A. 2.6 x 10^-3
B. 1.6 x 10^-3
c. 6.4 x 10^2
D. 3.8 x 10^2

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?