Help plz need the answer

Would corn syrup, molasses, or pancake syrup make a good lubricant in a car engine? explain your answer.

Which sections of the heating curve illustrate this process?

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.