Which of the Following Statements Is True

question 18

Multiple Choice

Which of the following statements is true?

• A) Maxwell's equations apply only to fields that are constant in time.
• B) Electromagnetic waves are longitudinal waves.
• C) The electric and magnetic fields are out of phase in an electromagnetic wave.
• D) The electric- and magnetic-field vectors and are equal in magnitude in an electromagnetic wave.
• E) None of these statements is true.

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Definitions:

Energy Of Activation

The minimum amount of energy that reacting species must have in order to undergo a specified reaction.

Enzyme

Biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.

Oxidized

Pertains to a process where a substance loses electrons or gains oxygen, often resulting in a change in physical and chemical properties.

FAD

Flavin adenine dinucleotide, a redox cofactor involved in several important reactions in metabolism. FAD can exist in a reduced (FADH2) and an oxidized state (FAD).