Quenching lead shot in a bath. lead shot having an average diameter of 5.1 mm is at an initial temperature of 204.4°c. to quench the shot, it is added to a quenching oil bath held at 32.2°c and falls to the bottom. the time of fall is 15 s. assuming an average convection coefficient of h = 199 w/m².k, what will be the temperature of the shot after the fall? for lead, p = 11 370 kg/m and cp = 0.138 kj/kg . k.