Air at 7°c enters a turbojet engine at a rate of 16 kg/s and at a velocity of 220 m/s (relative to the engine). air is heated in the combustion chamber at a rate 15,000 kj/s, and it leaves the engine at 427°c. determine the thrust produced by this turbojet engine.

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

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.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false