At One Instant an Electron (Charge = -1

question 41

Multiple Choice

At one instant an electron (charge = -1.6 *10^-19C) is moving in the xy plane, the components of its velocity being v_x = 5 * 10⁵ m/s and v_y = 3 * 10⁵ m/s. A magnetic field of 0.8 T is in the positive x direction. At that instant the magnitude of the magnetic force on the electron is:

• A) 0
• B) 2.6 * 10^-14 N
• C) 3.8 * 10^-14 N
• D) 6.4 * 10^-14 N
• E) 1.0 * 10^-14 N

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Definitions:

Orthologs

Genes across various species originating from a single ancestral gene through the process of speciation, which continue to perform the same function.

Gene Duplication

A genetic event that results in the creation of an extra copy of a gene, leading to genetic variation that can be acted upon by natural selection.

Bilaterians

Animals that possess bilateral symmetry, having a body plan that includes a head and tail (anterior-posterior axis), a back and belly (dorsal-ventral axis), and right and left sides.

Developmental Genes

Genes that control how living organisms grow and develop, influencing the formation of tissues and organs.