Technician A says that to properly lubricate a driveshaft U-joint with twin zerks, grease must be pumped into both nipples. Technician B says that if grease exits all four trunnion seals on a U-joint, it indicates that it has been properly greased and purged. Who is correct?

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.

Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?