Stainless steel ball bearings (r 5 8085 kg/m3 and cp 5 0.480 kJ/kg8C) having a diameter of 1.2 cm are to be quenched in water at a rate of 800 per minute. The balls leave the oven at a uniform temperature of 9008C and are exposed to air at 258C for a while before they are dropped into the water. If the temperature of the balls drops to 8508C prior to quenching, determine the rate of heat transfer from the balls to the air.
Sides Notes Chapter 1 Campaign o An organized effort to persuade and mobilize voters to support or oppose a party or candidate Elections o The selection of persons to hold public office by means of a vote Four aspects of campaigns and elections o The rules that govern elections o The broader reality – economic, political, and historical – that parties and candidates confront as they decide whether to run or how to campaign Incumbent The candidate in an election who already occupies the office o The strategic choices that varies actors make o The choices of citizens, who will ultimately decide the outcome Ways to
