The federal government has invested in a ______ that emits a sonic pulse; when a knife or gun is present, the pulse is reflected, triggering an alarm and a light.

Name: The federal government has invested in a ______ that emits a sonic pulse; when a knife or gun is present, the pulse is reflected, triggering an alarm and a light.
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Question

Quizplus · Accepted Answer

The correct term for a device that emits a sonic pulse to detect weapons by the reflection of the pulse is a "weapons detector."

The Federal Government Has Invested in a ______ That Emits