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.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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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
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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