Steam enters a nozzle operating at steady state at 20 bar, 253°C, with a velocity of 42 m/s. The exit pressure and temperature are 5 bar and 192°C, respectively. The mass flow rate is 3.3 kg/s. Neglecting heat transfer and potential energy, determine the inlet area in cm2.

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

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.