Physics For Scientists And Engineers
6th Edition
ISBN: 9781429201247
Author: Paul A. Tipler, Gene Mosca
Publisher: W. H. Freeman
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Chapter 31, Problem 37P
To determine
The width and depth of pool.
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When a man stands near the edge of an empty drainage ditch of depth 2.80 m, he can barely see the boundary between the opposite wall and bottom of the ditch as in Figure (a) shown below. The distance from his eyes to the ground is h = 1.88 m. (Assume ? = 33.0°.)
Figure a. A man of height h stands a horizontal distance d left of an empty rectangular drainage ditch of depth 2.80 m. A ray starts at the bottom right corner of the ditch, extends up and to the left to the upper left corner of the ditch, and then reaches the man's eyes. The ray forms an angle ? with the vertical.
Figure b. A man of height h stands a horizontal distance xleft of a rectangular drainage ditch that is filled with water. A ray starts at the bottom right corner of the ditch and extends up and to the left to the upper left corner of the ditch at an angle ? with the vertical. Upon exiting the water, the ray bends to become less steep than the ray in water, and extends up and to the left to the man's eyes.
(a) What is…
You are working at your university swimming center. The athletic department decides that it would like to install a flag pole of height 10.0 m at the south end of one of the outdoor pools, which lies
along a north-south axis. The pool is 3.09 m deep and the flag pole is to be installed 4.35 m from the south edge of the pool, midway along the length of the south edge.
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A statue 4.23 meters high is standing on a base of 4.90 meters high. If an observer's eye is 1.93 meters above the ground, how far should he stand from the base so the angle subtended by the statue is maximum?
Chapter 31 Solutions
Physics For Scientists And Engineers
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- A Fill in the missing entries in Table P38.70. Table P38.70arrow_forwardA woman measures the angle of elevation of a mountaintop as 12.0∘ . After walking 1.00 km closer to the mountain on level ground, she finds the angle to be 14.0∘. Find the mountain's height, neglecting the height of the woman's eyes above the ground.arrow_forwardEstimate the height of the building shown in the following figure by the method of triangulation. The person is standing 5 meters from a pole, which is 15 meters from the building. The person's vision perceives the top of the pole aligned with the top of the building. The person is approximately 1.75 meters and the pole is approximately 3.5 meters. 15 m b) Estimate the volume and mass of water that exists in a lake. The shape of the lake is approximately circular, it is almost 500 meters in diameter and is supposed to have a average depth of 20.0 meters. Remember that the density of water is equal to 1000 Kg / m3 d= 500m h = 20.0marrow_forward
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