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Explain how a radio antenna works when transmitting a signal.
When the electricity moves back and forth in the antenna at the same frequency as the radio waves, it creates both a magnetic field and an electrical field around the antenna. This continuous (analog) combination of magnetism and electrical pressure moves away (propagates) from the antenna the same way that water waves move away from the point of impact when you throw a rock in a pond.
Frequency
The number of complete wavelengths that pass a point in a given time (for example, per second).
Daily Exercise
Engaging in physical activity on a regular basis to maintain or improve health and fitness.
Operant Behavior Specialists
Professionals who apply the principles of operant conditioning in therapeutic, educational, or organizational settings to modify behavior.
Preparedness
A biological predisposition to learn associations, such as between taste and nausea, that have survival value.
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