The many different hydrocarbon compounds found in petroleum can be separated in a process called A-Fractional distillation
B-Combustion
C-Condensation
D-Nuclear reaction

Any idea

Fractional distillation

Explanation:

Fractional distillation is the use of distillation to separate a liquid mixture into different parts (fractions) that differ in boiling point. The substances in crude oil have different boiling points, so they can be separated by fractional distillation.

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

wavelength divides in half and speed stays the same.