When gasoline is burned in a car engine what is that called

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.

Which is a substance that can be separated by physical means and is not the same throughout