COLLEGE PHYSICS:STRATEGIC APPR.AP ED.
4th Edition
ISBN: 9780137574728
Author: Knight
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 18, Problem 5CQ
If you take a walk on a summer night along a dark, unpaved road in the woods, with a flashlight pointing at the ground several yards ahead to guide your steps, any water-filled potholes are noticeable because they appear much darker than the surrounding dry road. Explain why.
Expert Solution & Answer
Trending nowThis is a popular solution!
Learn your wayIncludes step-by-step video
schedule02:34
Students have asked these similar questions
If you take a walk on a summer night along a dark, unpaved road in the woods, with a flashlight pointing at the ground several yards ahead to guide your steps, any water-filled potholes are noticeable because they appearmuch darker than the surrounding dry road. Explain why.
. You are some type of half fish half human thing. From underwater you see a bird flying above the surface. You want to hit it with your spear (reverse spear fishing), but you know that your aim will be off due to refraction. Where will you need to aim in order to correct for lights changing pathway? either draw a picture with a small description of what to do or provide a detailed description of what to do and why. (picture = 1000 words and all that)
2. An astronaut has found a transparent (although slightly reflective and a little bit foggy) gem floating in space. They shine a laser into the gem at about 30 degrees away from the normal line and see that inside of the gem the laser is refracting to 50 degrees away from the normal line. What is unusual about this gemstone?
2) During your summer vacation abroad, you decide to use a hoteľs outdoor
swimming pool. The depth numbers are faded away by the Sun, and you want
to know if you can dive or not. The pool is filled with water to the top and is 4
meters wide by 4 meters long. The entire bottom of the pool becomes 100%
shaded when the afternoon Sun is twenty degrees above the horizon. How deep
is the pool? Can you dive safely?
Chapter 18 Solutions
COLLEGE PHYSICS:STRATEGIC APPR.AP ED.
Ch. 18 - Prob. 1CQCh. 18 - Can you see the rays from the sun on a clear day?...Ch. 18 - Prob. 3CQCh. 18 - Prob. 4CQCh. 18 - If you take a walk on a summer night along a dark,...Ch. 18 - You are looking at the image of a pencil in a...Ch. 18 - Prob. 7CQCh. 18 - In Manets A Bar at the Folies-Bergere (see Figure...Ch. 18 - Prob. 10CQCh. 18 - You are looking straight into the front of an...
Ch. 18 - Prob. 12CQCh. 18 - Prob. 13CQCh. 18 - Prob. 14CQCh. 18 - Prob. 15CQCh. 18 - A lens can be used to start a fire by focusing an...Ch. 18 - A piece of transparent plastic is molded into the...Ch. 18 - From where you stand one night, you see the moon...Ch. 18 - Prob. 20MCQCh. 18 - Prob. 21MCQCh. 18 - Is there an angle of incidence between 0 and 90...Ch. 18 - A 2.0-m-tall man is 5.0 m from the converging lens...Ch. 18 - You are 2.4 m from a plane mirror, and you would...Ch. 18 - As shown in Figure Q18.22, an object is placed in...Ch. 18 - Prob. 26MCQCh. 18 - Prob. 27MCQCh. 18 - The lens in Figure Q18 .25 is used to produce a...Ch. 18 - You look at yourself in a convex mirror. Your...Ch. 18 - A 5.0-ft-tall girl stands on level ground. The sun...Ch. 18 - Prob. 2PCh. 18 - A point source of light illuminates an aperture...Ch. 18 - Prob. 4PCh. 18 - It is 165 cm from your eyes to your toes. Youre...Ch. 18 - Prob. 6PCh. 18 - Prob. 7PCh. 18 - Prob. 8PCh. 18 - Prob. 9PCh. 18 - Prob. 11PCh. 18 - An underwater diver sees the sun 50 above...Ch. 18 - A laser beam in air is incident on a liquid at an...Ch. 18 - Prob. 14PCh. 18 - A 1.0-cm-thick layer of water stands on a...Ch. 18 - Prob. 16PCh. 18 - A 4.0-m-wide swimming pool is filled to the top....Ch. 18 - Prob. 19PCh. 18 - Prob. 20PCh. 18 - A light ray travels inside a horizontal plate of...Ch. 18 - Prob. 22PCh. 18 - Prob. 23PCh. 18 - Prob. 24PCh. 18 - A biologist keeps a specimen of his favorite...Ch. 18 - Prob. 26PCh. 18 - A fish in a flat-sided aquarium sees a can of fish...Ch. 18 - Prob. 28PCh. 18 - A swim mask has a pocket of air between your eyes...Ch. 18 - An object is 30 cm in front of a converging lens...Ch. 18 - An object is 6.0 cm in front of a converging lens...Ch. 18 - Prob. 32PCh. 18 - Prob. 33PCh. 18 - Prob. 34PCh. 18 - Prob. 35PCh. 18 - Prob. 36PCh. 18 - Prob. 37PCh. 18 - A light bulb is 60 cm from a concave mirror with a...Ch. 18 - Prob. 40PCh. 18 - A dentist uses a curved mirror to view the back...Ch. 18 - Prob. 42PCh. 18 - An object is 12 cm in front of a convex mirror....Ch. 18 - A 2.0-cm-tall object is 40 cm in front of a...Ch. 18 - A 1.0-cm-tall object is 10 cm in front of a...Ch. 18 - A 2.0-cm-tall object is 15 cm in front of a...Ch. 18 - A 1.0-cm-tall object is 75 cm in front of a...Ch. 18 - A 2.0-cm-tall object is 15 cm in front of a...Ch. 18 - A 1.0-cm-tall object is 60 cm in front of a...Ch. 18 - A 3.0-cm-tall object is 15 cm in front of a convex...Ch. 18 - A 3.0-cm-tall object is 45 cm in front of a convex...Ch. 18 - A 3.0-cm-tall object is 15 cm in front of a...Ch. 18 - A 3.0-cm-tall object is 45 cm in front of a...Ch. 18 - Prob. 54PCh. 18 - Prob. 55PCh. 18 - Prob. 57PCh. 18 - Prob. 59PCh. 18 - Prob. 60PCh. 18 - Prob. 61GPCh. 18 - You slowly back away from a plane mirror at a...Ch. 18 - Prob. 63GPCh. 18 - The place you get your hair cut has two nearly...Ch. 18 - Prob. 65GPCh. 18 - Prob. 66GPCh. 18 - Its nighttime, and youve dropped your goggles into...Ch. 18 - Figure P18.54 shows a meter stick lying on the...Ch. 18 - Prob. 69GPCh. 18 - Prob. 70GPCh. 18 - A 1.0-cm-thick layer of water stands on a...Ch. 18 - The glass core of an optical fiber has index of...Ch. 18 - A 150-cm-tall diver is standing completely...Ch. 18 - To a fish, the 4 00-mm-thick aquarium walls appear...Ch. 18 - A microscope is focused on an amoeba. When a...Ch. 18 - You need to use a 24-cm-focal-length lens to...Ch. 18 - A near-sighted person might correct his vision by...Ch. 18 - A 1.5-cm-tall object is 90 cm in front of a...Ch. 18 - A 2.0-cm-tall candle flame is 2.0 m from a wall....Ch. 18 - A 2.0-cm-diameter spider is 2.0 m from a wall....Ch. 18 - Figure P18.75 shows a meter stick held lengthwise...Ch. 18 - A slide projector needs to create a 98-cm-high...Ch. 18 - The pocket of hot air appears to be a pool of...Ch. 18 - Which of these changes would allow you to get...Ch. 18 - If you could clearly see the image of an object...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Q1. Which wavelength of light has the highest frequency?
a) 10 nm
b) 10 mm
c) 1 nm
d) 1 mm
Chemistry: A Molecular Approach (4th Edition)
Gray whales (Eschrichtius robustus) gather each winter near Baja California to give birth. How might such behav...
Campbell Biology (11th Edition)
You have generated three transgenic lines of maize that are resistant to the European corn borer, a significant...
Genetic Analysis: An Integrated Approach (3rd Edition)
4. Three groups of nonvascular plants are _______, ______, and _______. Three groups of seedless vascular plant...
Biology: Life on Earth (11th Edition)
Plants use the process of photosynthesis to convert the energy in sunlight to chemical energy in the form of su...
Campbell Essential Biology with Physiology (5th Edition)
60. You are 9.0 m from the door of your bus, behind the bus, when it pulls away with an acceleration of 1.0 m/...
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- When the sun is either rising or setting and appears to be just on the horizon, it is in fact below the horizon. The explanation for this seeming paradox is that light from the sun bends slightly when entering the earth’s atmosphere, as shown in Fig. Since our perception is based on the idea that light travels in straight lines, we perceive the light to be coming from an apparent position that is an angle d above the sun’s true position. (a) Make the simplifying assumptions that the atmosphere has uniform density, and hence uniform index of refraction n, and extends to a height h above the earth’s surface, at which point it abruptly stops. Show that the angle d is given by as attached. where R = 6378 km is the radius of the earth. (b) Calculate d using n = 1.0003 and h = 20 km. How does this compare to the angular radius of the sun, which is about one quarter of a degree? (In actuality a light ray from the sun bends gradually, not abruptly, since the density and refractive index of the…arrow_forwardYou are working on a project to plot the course of a spy satellite. The satellite has a polar orbit (which means it passes over both of Earth's poles during each orbit), and it is outfitted with a camera carrying a wide-angle lens that can "see" strips of land up to 2100 km wide. The enemy is believed to have chosen an elevation of orbit that just guarantees complete coverage of Earth each day by these surveillance strips. You cannot avoid or block the satellite unless you know where it is. Calculate a height of the satellite's orbit above the surface of Earth.arrow_forwardYou are a detective interviewing someone who says that (while sitting on a porch that you know to be 600ft away) he saw the masked suspect commit the crime in broad daylight. "How do you know it was the suspect?" you ask. "I clearly saw the 'MOM' that is tattooed on his upper arm." "You're sure it was that particular tattoo and not some other tattoo?" "Yes, I'm sure," The witness replies. The suspect's tattoo has letters that are 6cm tall. Is the witness credible, or might he be framing the suspect? Justify your response and any estimates you might make.arrow_forward
- (a) A small light fixture on the bottom of a swimming pool is 0.72 m below the surface. The light emerging from the still water forms a circle on the water surface. What is the diameter of this circle? (Give your answer, in m, to at least two decimal places.) (b) What If? If a 2.13 cm thick layer of oil (n = 1.35) is spread uniformly over the surface of the water, what is the diameter of the circle of light emerging from the swimming pool? (Give your answer, in m, to at least two decimal places.)arrow_forwardI'm going to install a placard on the school bulletin board. The placard is 2 meters long and the bottom of the placard is 1 meter above the eye level. How many meters away is the position of the placard's lowest to highest angle from the notice board?arrow_forwardA person swimming underwater on a bright day and looking up at the surface will see a bright circle surrounded by relative darkness as in figure (a) below, a phenomenon known as Snell's window. Use the concept of total internal reflection and the illustration in figure (b) to show that ? = 97.2° for the cone containing Snell's window. (Submit a file with a maximum size of 1 MB.) HINTarrow_forward
- (a) An opaque cylindrical tank with an open top has a diameter of 3.10 m and is completely filled with water. When the afternoon sun reaches an angle of 30.0° above the horizon, sunlight ceases to illuminate any part of the bottom of the tank. How deep is the tank (in m)? m (b) What If? On winter solstice in Honolulu, the sun reaches a maximum altitude of 45.3° above the horizon. What would the depth of the tank have to be (in m) for the sun not to illuminate the bottom of the tank on that day?arrow_forwardAn opaque cylindrical tank with an open top has a diameter of 3.25 m and is completely filled with water. When the afternoon Sun reaches an angle of 33.6° above the horizon, sunlight ceases to illuminate the bottom of the tank. How deep is the tank?marrow_forwardAn underwater scuba diver sees the Sun at an apparent angle of 34.0° from the vertical. What is actual direction of the Sun? (above the horizon)arrow_forward
- On a clear day a tiny fish hides under water (n water = 1.39 ) from an osprey under a circular leaf that has a diameter of 0.175 m. What is the maximum depth below the leaf that the fish can be so that it could not be spotted by the ospray? Provide your answer in meters with a precision of four places after the decimal.arrow_forward25. A fisherman in a boat is looking straight down through the water at a light bulb on the bottom of the lake. The lake is 10 ft deep at this point and filled with water (n=1.33). If the fisherman begins rowing directly away from the light bulb, how far can he travel across the water before he can no longer see the light bulb at all?arrow_forwardWhy is your vision so blurry when you open your eyes while swimming under water? How does a face mask enable clear vision?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStax
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Laws of Refraction of Light | Don't Memorise; Author: Don't Memorise;https://www.youtube.com/watch?v=4l2thi5_84o;License: Standard YouTube License, CC-BY