An Electron Has a Speed of 0

question 11

Multiple Choice

An electron has a speed of 0.783c. Through what potential difference would the electron need to be accelerated from rest in order to reach this speed? The rest mass energy of an electron is 0.511 MeV.

• A) 310 kV
• B) 260 kV
• C) 360 kV
• D) 400 kV

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Definitions:

Vacuole

Membrane-bound sac, larger than a vesicle; usually functions in storage and can contain a variety of substances. In plants, the central vacuole fills much of the interior of the cell.

Plant Cells

The basic structural and functional units of plants, distinguished by their cell wall, chloroplasts, and central vacuole.

Pigments

Substances that give color to living things, found in the skin, hair, eyes, plants, and many other parts of living organisms.

Mitochondrion

A double-membraned organelle found in most eukaryotic cells, central to the production of ATP (energy) through the process of cellular respiration.