____ Use Ultrasonic Frequencies and Microwaves to Detect Movement

question 5

Multiple Choice

____ use ultrasonic frequencies and microwaves to detect movement.

• A) Intercom systems
• B) Video surveillance systems
• C) Intrusion detectors
• D) Motion detectors

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Definitions:

Center

The point that is equally distant from every point on the circumference of a circle or sphere; by extension, a balanced or neutral position in discussions or analysis.

Price Level

The overall mean price of all current goods and services in the economic setting.

Curve

In economics, a graphical representation showing the relationship between two varying quantities, such as supply and demand.

Slope

A measure of the steepness, incline, or grade of a line, representing the rate of change between variables on a graph.