Chapter9: Optics
Section: Chapter Questions
Problem 13Q: (Indicates a review question, which means it requires only a basic understanding of the material to...
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I got question 1 right. I have a issues with question 2. In red stuff there is formula to use to solve this question can you help me how to reach the answer I m getting so much confused about this 2 part. Try to use formula that show in the paper
![300 km above rock
150 m thick
material
Unknown material e=?
Sandstone, =6
21) The diagram shows two positions of a radar sounder. A) position over a sandstone
with ɛ=6 and 300 km above the surface. B) Same elevation, but there is an unknown
material. A laser altimeter found that the unknown material has a thickness of 150 m.
1. Find the two way delay time in microseconds to the sandstone for position (A).
2. If you know that the two way time delay to the sand stone at (B) is 1.345
microseconds longer than for position (A), determine the unknown ɛ.
t,it, t '.345-
d = v*t/2
* ンd/v
ニ 2x 300 00 m
2us
2x 10-4
second
3x108 x 1. 345
2.0 us v
%3D
- 82.36 m
t= 2d
a + 2dera
ーz 62=t,t1 345us](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff022d47f-09de-4bf8-953a-b2c43f04ee80%2F35cae75a-8eca-4cb9-b3cd-86c21ab0438d%2Fzmf08kg_processed.png&w=3840&q=75)
Transcribed Image Text:300 km above rock
150 m thick
material
Unknown material e=?
Sandstone, =6
21) The diagram shows two positions of a radar sounder. A) position over a sandstone
with ɛ=6 and 300 km above the surface. B) Same elevation, but there is an unknown
material. A laser altimeter found that the unknown material has a thickness of 150 m.
1. Find the two way delay time in microseconds to the sandstone for position (A).
2. If you know that the two way time delay to the sand stone at (B) is 1.345
microseconds longer than for position (A), determine the unknown ɛ.
t,it, t '.345-
d = v*t/2
* ンd/v
ニ 2x 300 00 m
2us
2x 10-4
second
3x108 x 1. 345
2.0 us v
%3D
- 82.36 m
t= 2d
a + 2dera
ーz 62=t,t1 345us
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