Two charges attract each other with a force of 9 X 10^-5 N. If the distance between the charges is tripled the force will become O 3.6 X 10^-5N
O 26 X 10^-5N
O 1 X 10^-5N
O 44 X 10^-5N

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?