Can someone help me Please?
1. The main purpose of the turbine in the turbojet engine is to?
A.Drive the compressor
B.Increase the velocity of the exhaust gases
C. reduce the temperature of the exhaust gas.
2.Which of the following takes place
1. A.
2. B.
3. The specific heat of coal is 3.2 kJ/kg,K, according to this source:
http://www.taftan.com/xl/combus1.htm
3.2 kJ/kg,K * 5kg * 200k = 3200 kJ = 3,200,000 J
I bet the correct answer is C.