The Electromagnetic Wave of the Radiation Field from a Wire

question 12

Multiple Choice

The electromagnetic wave of the radiation field from a wire antenna travels toward the plane of your paper (which is in the -z direction) . At time t = 0 s, the wave strikes your paper at normal incidence. The magnetic field vector at point O in the figure points in the -y direction and has a magnitude of 4.0 × 10^-8 T. The frequency of the wave is 1.0 × 10¹⁶ Hz.
-What is the wavelength of this electromagnetic wave?

• A)0.33 nm
• B)3.3 nm
• C)20 nm
• D)30 nm
• E)40 nm

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Definitions:

Extrinsic Motivation

A drive, or reason to pursue a goal, that arises from the wish to have external rewards, perhaps by earning money or praise.

Initiative Guilt

A stage in psychosocial development where children face conflicts between their desire to act independently and the guilt that may come from unintended consequences or overstepping boundaries.

Intrinsic Motivation

The drive to engage in activities for their own sake and personal rewards, rather than for some separate consequence.

Dramatic Play

A form of play in which children adopt roles and act out scenarios, either real or imagined, for entertainment and learning.