Homework 11, Problem 3 Problem 3: A student stands do = 2.6 m in front of a floor-to-ceiling mirror. Her eyes are he = 1.43 m above the floor and she holds a flashlight at a distance hf= 0.65 m above the floor.Randomized Variablesdo = 2.6 mhe = 1.43 mh₁ = 0.65 mCalculate the angle 0, in degrees, that the flashlight makes with respect to the floor if the light is reflected into her eyes.0 =sin()cotan() asin()cos()tan()acos()π () 7 8 9E45HOME6atan() acotan() sinh()cosh() tanh()*1 23cotanh()ENDO DegreesRadians√) BACKSPACEDELCLEARSubmitHintFeedbackI give up!

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Answered: Problem 3: A student stands do = 2.6 m…

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter1: The Nature Of Light

Section: Chapter Questions

Problem 34P: Suppose a man stands in front of a mm-or as show below. His eyes are 1.65 m above the floor and the...

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Suppose a man stands in front of a mm-or as show below. His eyes are 1.65 m above the floor and the top of his head is 0.13 m higher. Find the height above the floor of the top and bottom of the smallest minor in which he can see both the top of his head and his feet. How is this distance related to the man’s height?
In Equation 4.4, the parameter looks like an angle but is not an angle that you can measure with a protractor in the physical world. Explain what represents.
In what substance in Table 1.1 is the speed of light 2.290108 m/s?
The index of refraction for water is about 43. What happens as a beam of light travels from air into water? (a) Its speed increases to 43c, and its frequency decreases. (b) Its speed decreases to 34c, and its wavelength decreases by a factor of 34. (c) Its speed decreases to 34c, and its wavelength increases by a factor of 43. (d) Its speed and frequency remain the same. (e) Its speed decreases to 34c, and its frequency increases.
If bis Brewster’s angle for light reflected from the top of an interface between two substances, and bis Brewster’s angle for light reflected from below, prove that b+b=90.0
Check Your Understanding in Example 1.6, we had n1n2. If n2were decreased such thatn1n2and the speed of light in medium 2 is faster than in medium 1, what would happen to the length of AA’ ? What would happen to the wave front A’B and the direction of the refracted ray?
Speculate as to s1at physical process might be responsible for light traveling more slowly in a medium than in a vacuum.
A man shines a flashlight from a boat into the water, illuminating a rock as in Figure P22.21. What is the angle of incidence 1?
What happens to a light wave when it travels from air into glass? (a) Its speed remains the same. (b) Its speed increases. (c) Its wavelength increases. (d) Its wavelength remains the same. (e) Its frequency remains the same.
Often in optics scientists take advantage of effects that require very high intensity light. To get the desired effect a scientist uses a laser with power P = 0.0065 W to reach an intensity of I = 170 W/cm2 by focusing it through a lens of focal length f = 0.11 m. The beam has a radius of r = 0.0011m when it enters the lens. Randomized VariablesP = 0.0065 WI = 170 W/cm2f = 0.11 mr = 0.0011 Part (a) Express the radius of the beam, rp, at the point where it reaches the desired intensity in terms of the given quantities. (In other words, what radius does the beam have to have after passing through the lens in order to have the desired intensity?) Part (b) Give an expression for the tangent of the angle that the edge of the beam exits the lens with with respect to the normal to the lens surface, in terms of r and f? Part (c) Express the distance, D, between the lens's focal point and the illuminated object using tan(α) and rp. Part (d) Find the distance, D, in centimeters.…
When a vertical beam of light passes through a transparent medium, the rate at which its intensity I decreases is proportional to I(t), wheret represents the thickness of the medium (in feet). In clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity I, of the incident beam. dI Find the constant of proportionality k, where dt = kI. k = 0.462 What is the intensity of the beam 18 feet below the surface? (Give your answer in terms of I. Round any constants or coefficients to five decimal places.) 0' 0.00024
A beam of light (wavelength of 600 nm) is traveling in air and strikes transparent material. The incident beam makes an angle of 40° with the normal, and the refracted beam make an angle of 20⁰ with the normal. What is the wavelength of light in the transparent material? Jhay O 102.6 nm O 200 nm 350 nm O 705.6 nm O 319.3 nm

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