How is a radar gun able to calculate the speed of a moving object using radio waves?

B. Radio waves are reflected off of the moving object, which causes a change in frequency that can be analyzed by the software of the radar gun to calculate the object's speed.

Explanation:

close

As an object moves away from a radar gun, each successive wave is reflected off of the object onto the radar gun at a position farther than the previous wave. As a result, the distance between two successive crests increases and the frequency of the reflected wave decreases. Similarly, when an object moves toward a radar gun, each successive wave is reflected back to the radar gun at a position closer than the previous wave. As a result, the distance between two successive crests decreases and the frequency of the reflected wave increases. A decrease or increase in frequency is analyzed by a software program in radar guns to determine the speed of the object.

Therefore, radio waves are reflected off of the moving object, which causes a change in frequency that can be analyzed by the software of the radar gun to calculate the object's speed.

gg

explanation:

the author is intending to draw attention to the plight of refugees, editorial and biography support this. both workpieces make the reader empathize with enrique as well as with the other young migrants from central america. the writer, however, is using a different approach to each text.

the editorial includes strong words to persuade readers. he is trying hard to convince readers in the us to change its refugee approach.

the biography relies on narrative techniques and figurative language which the writer uses wisely in the setting, characterization, and personification to educate readers on the topic.