AnswersSK-1 41.8°SK-2 a)--- b) 63.6km c) 63.6sSK-3 a) x=2.62x10°m The wave front from position #1 is at his ear.b) x=1.80x10°m The shockwave is at his ear.13NErniege SK-2 Andrei is flying an SR-71 horizontally at 1,000m/s at an altitude of 20,000m where the speed of soundis 300m/s. Austin first sees Andrei where andrei is directly above Austin, as shown in the figure below.20,000mAustina) Make a sketch showing the plane at the position when Austin first hears Andrei's plane (when theshock wave first crosses Austin's ear).b) Find the x coordinate of Andrei's position at the instant Austin first hears the plane.c) Find the elapsed time from when Austin first see's the plane until he first hears the plane.

Answered: Image /qna-images/answer/84f526d1-78cb-492d-adb2-ebcbfef0be15.jpg

-2 Andrei is flying an SR-71 horizontally at 1,000m/s at an altitude of 20,000m where the speed of sound is 300m/s. Austin first sees Andrei where andrei is directly above Austin, as shown in the figure below. y 20,000m Austin X a) Make a sketch showing the plane at the position when Austin first hears Andrei's plane (when the shock wave first crosses Austin's ear). b) Find the x coordinate of Andrei's position at the instant Austin first hears the plane. c) Find the elapsed time from when Austin first see's the plane until he first hears the plane.

-2 Andrei is flying an SR-71 horizontally at 1,000m/s at an altitude of 20,000m where the speed of sound is 300m/s. Austin first sees Andrei where andrei is directly above Austin, as shown in the figure below. y 20,000m Austin X a) Make a sketch showing the plane at the position when Austin first hears Andrei's plane (when the shock wave first crosses Austin's ear). b) Find the x coordinate of Andrei's position at the instant Austin first hears the plane. c) Find the elapsed time from when Austin first see's the plane until he first hears the plane.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Answers
SK-1 41.8°
SK-2 a)--- b) 63.6km c) 63.6s
SK-3 a) x=2.62x10°m The wave front from position #1 is at his ear.
b) x=1.80x10°m The shockwave is at his ear.
13
NE
rni
ege

SK-2 Andrei is flying an SR-71 horizontally at 1,000m/s at an altitude of 20,000m where the speed of sound
is 300m/s. Austin first sees Andrei where andrei is directly above Austin, as shown in the figure below.
20,000m
Austin
a) Make a sketch showing the plane at the position when Austin first hears Andrei's plane (when the
shock wave first crosses Austin's ear).
b) Find the x coordinate of Andrei's position at the instant Austin first hears the plane.
c) Find the elapsed time from when Austin first see's the plane until he first hears the plane.

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