College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
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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Question
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

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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