Which of the following takes place in the combustion chamber of a gas turbine engine?
A. Fuel oil is mixed with a proper portion of compressed air
B. Gaseous combustion products are cool to a desired temperature
C. Fuel oil is stored with sufficient pressure
D. a glow plug is used to add enough heat to the chamber for combustion to occur

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire