Having become stranded in a remote wilderness area, you must live off the land while you wait for rescue. One morning, you attempt to spear a fish for breakfast. You spot a fish in a shallow river. Your first instinct is to aim the spear where you see the image of the fish, at an angle ф = 43.40° with respect to the vertical, as shown in the figure. However, you know from physics class that you should not throw the spear at the image of the fish, because the actual location of the fish is farther down than it appears, at a depth of H = 0.9500 m. This means you must decrease the angle at which you throw the spear. This slight decrease in the angle is represented as a in the figure.
Having become stranded in a remote wilderness area, you must live off the land while you wait for rescue. One morning, you attempt to spear a fish for breakfast. You spot a fish in a shallow river. Your first instinct is to aim the spear where you see the image of the fish, at an angle ф = 43.40° with respect to the vertical, as shown in the figure. However, you know from physics class that you should not throw the spear at the image of the fish, because the actual location of the fish is farther down than it appears, at a depth of H = 0.9500 m. This means you must decrease the angle at which you throw the spear. This slight decrease in the angle is represented as a in the figure.
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
Transcribed Image Text:Having become stranded in a remote wilderness area, you
must live off the land while you wait for rescue. One morning,
you attempt to spear a fish for breakfast.
h
You spot a fish in a shallow river. Your first instinct is to aim
the spear where you see the image of the fish, at an angle
$ = 43.40° with respect to the vertical, as shown in the figure.
However, you know from physics class that you should not
Image
throw the spear at the image of the fish, because the actual
location of the fish is farther down than it appears, at a depth
H
of H
0.9500 m. This means you must decrease the angle at
which you throw the spear. This slight decrease in the angle is
represented as a in the figure.
If you throw the spear from a height h :
1.200 m above the
water, calculate the angle decrease a. Assume that the index
of refraction is 1.000 for air and 1.330 for water.
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