A Radar Pulse Sent Out to an Airplane at a Distance

question 22

Multiple Choice

A radar pulse sent out to an airplane at a distance of 20.0 km will return as an echo to the source in what time interval? (c = 3.00 x 10⁸ m/s)

• A)33.3 x 10^-6 s
• B)66.7 x 10^-6 s
• C)133 x 10^-6 s
• D)0.033 3 x 10^-6 s

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Definitions:

Metal Detectors

Electronic devices that are used to locate metallic objects within a surrounding medium through the generation and detection of electromagnetic fields.

Terrorists

Individuals who use violence and intimidation, especially against civilians, in the pursuit of political aims.

Hijackers

Individuals who unlawfully seize control of a vehicle, such as a plane or ship, often to reach a particular goal or demand.

Hydrocarbon Combustions

The chemical process in which hydrocarbons react with oxygen to produce carbon dioxide, water, and heat.