Amanufacturer claims that a carpet will not generate more than 5.8 kv of static electricity what magnitude of charge would have to be transferred between a carpet and a shoe for there to be a 5.8 kv potential distance d = 2.8 mm ? approximate the area of a shoe as 30 cm x 8 cm. express your answer using two significant figures.

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?