General Physics, 2nd Edition
2nd Edition
ISBN: 9780471522782
Author: Morton M. Sternheim
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 21, Problem 53E
(a)
To determine
The percentage reduction of the light energy that reaches the woman’s eyes when she puts on the sunglasses.
(b)
To determine
The percentage reduction of the light energy that reaches the woman’s eyes when she puts on the sunglasses if she is lying on her side.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The intensity of light I through a lake at a depth of x meters is given by the following formula.
dI/dx=(−1.31)I
(a) At what depth is the intensity of the light half that of the intensity at the surface, I0?
(b) At 5 meters deep, what is the intensity of the light as a fraction of
I0?
c) At what depth will the intensity of the light be 11% of the light at the surface?
The Sun delivers an average power of 1 370. W/m2 to the topof Earth’s atmosphere. Find the magnitudes of E→max and B→maxfor the electromagnetic waves at the top of the atmosphere.
The intensity of light I through a lake at a depth of x meters is given by the following formula.
dI/dx = (-2.31)I
a.) At what depth is the intensity of the light half that of the intensity at the surface, I00?
b.) At 5 meters deep, what is the intensity of the light as a fraction of I0?
c.) How many meters deep will the intensity of light be 1 percent of the intensity of the light at the surface?
Remember that the depth at the surface is x = 0.
Chapter 21 Solutions
General Physics, 2nd Edition
Ch. 21 - Prob. 1RQCh. 21 - Prob. 2RQCh. 21 - Prob. 3RQCh. 21 - Prob. 4RQCh. 21 - Prob. 5RQCh. 21 - Prob. 6RQCh. 21 - Prob. 7RQCh. 21 - Prob. 8RQCh. 21 - Prob. 9RQCh. 21 - Prob. 10RQ
Ch. 21 - Prob. 1ECh. 21 - Prob. 2ECh. 21 - Prob. 3ECh. 21 - Prob. 4ECh. 21 - Prob. 5ECh. 21 - Prob. 6ECh. 21 - Prob. 7ECh. 21 - Prob. 8ECh. 21 - Prob. 9ECh. 21 - Prob. 10ECh. 21 - Prob. 11ECh. 21 - Prob. 12ECh. 21 - Prob. 13ECh. 21 - Prob. 14ECh. 21 - Prob. 15ECh. 21 - Prob. 16ECh. 21 - Prob. 17ECh. 21 - Prob. 18ECh. 21 - Prob. 19ECh. 21 - Prob. 20ECh. 21 - Prob. 21ECh. 21 - Prob. 22ECh. 21 - Prob. 23ECh. 21 - Prob. 24ECh. 21 - Prob. 25ECh. 21 - Prob. 26ECh. 21 - Prob. 27ECh. 21 - Prob. 28ECh. 21 - Prob. 29ECh. 21 - Prob. 30ECh. 21 - Prob. 31ECh. 21 - Prob. 32ECh. 21 - Prob. 33ECh. 21 - Prob. 34ECh. 21 - Prob. 35ECh. 21 - Prob. 36ECh. 21 - Prob. 37ECh. 21 - Prob. 38ECh. 21 - Prob. 39ECh. 21 - Prob. 40ECh. 21 - Prob. 41ECh. 21 - Prob. 42ECh. 21 - Prob. 43ECh. 21 - Prob. 44ECh. 21 - Prob. 45ECh. 21 - Prob. 46ECh. 21 - Prob. 47ECh. 21 - Prob. 48ECh. 21 - Prob. 49ECh. 21 - Prob. 50ECh. 21 - Prob. 51ECh. 21 - Prob. 52ECh. 21 - Prob. 53ECh. 21 - Prob. 54ECh. 21 - Prob. 55ECh. 21 - Prob. 56ECh. 21 - Prob. 57ECh. 21 - Prob. 58ECh. 21 - Prob. 59ECh. 21 - Prob. 60ECh. 21 - Prob. 61ECh. 21 - Prob. 62ECh. 21 - Prob. 63ECh. 21 - Prob. 64ECh. 21 - Prob. 65ECh. 21 - Prob. 66ECh. 21 - Prob. 67ECh. 21 - Prob. 68ECh. 21 - Prob. 69ECh. 21 - Prob. 70ECh. 21 - Prob. 71ECh. 21 - Prob. 72ECh. 21 - Prob. 73ECh. 21 - Prob. 74ECh. 21 - Prob. 75ECh. 21 - Prob. 76ECh. 21 - Prob. 77ECh. 21 - Prob. 78ECh. 21 - Prob. 79ECh. 21 - Prob. 80E
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
- A Doppler weather radar station broadcasts a pulse of radio waves at frequency 2.85 GHz. From a relatively small batch of raindrops at bearing 38.6 east of north, the station receives a reflected pulse after 180 s with a frequency shifted upward by 254 Hz. From a similar batch of raindrops at bearing 39.6 east of north, the station receives a reflected pulse after the same time delay, with a frequency shifted downward by 254 Hz. These pulses have the highest and lowest frequencies the station receives, (a) Calculate the radial velocity components of both batches of raindrops. (b) Assume that these raindrops are swirling in a uniformly rotating vortex. Find the angular speed of their rotation.arrow_forwardWhat is the average magnitude of the Poynting vector 5.00 mi from a radio transmitter broadcasting isotropically (equally in all directions) with an average power of 250 kW?arrow_forwardThe electric field of an electromagnetic wave traveling in vacuum is described by the following wave function: E =(5.00V/m)cos[kx(6.00109s1)t+0.40] j where k is the wavenumber in rad/m, x is in m, t s in Find the following quantities: (a) amplitude (b) frequency (c) wavelength (d) the direction of the travel of the wave (e) the associated magnetic field wavearrow_forward
- The radiation power density of the sun is approximately 150 W/m² in some locations on the Earth surface. How much power focuses in solar panel of 0.6 m X 1.6 m if the panel is 45 degrees to the direction of the radiation?arrow_forwardLight from a laser is propagating in the horizontal direction when it strikes a vertical wall. If the time-averaged intensity of the light from the laser beam is 1,500 watts/m2, what pressure does the beam exert on the wall? a. 4.5 x 10-6 Pa b. 4.0 x 10-6 Pa c. 3.5 x 10-6 Pa d. 3.0 x 10-6 Pa e. 5.0 x 10-6 Paarrow_forwardThe Sun delivers an average power of 14.84 W/m2 to the top of Saturn's atmosphere. Find the magnitudes of vector E max and vector B max for the electromagnetic waves at the top of the atmosphere.arrow_forward
- A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. The area of the mirror is 2.43 m2and the light exerts a force of 1.03 μN on it. Calculate the intensity ? of the light. ?=???arrow_forwardThree electromagnetic waves travel through a certain point P along an x axis. They are polarized parallel to a y axis, with the following variations in their amplitudes. Find their resultant at P. E1 = (5.0 × 10-5 V/m) sin[(4.0 × 1014 rad/s)t] E2 = (7.0 × 10-6 V/m) sin[(4.0 × 1014 rad/s)t + 45˚] E3 = (7.0 × 10-6 V/m) sin[(4.0 × 1014 rad/s)t - 45˚]arrow_forwardThe average intensity of light emerging from a polarizing sheet is 0.789 W/m2, and that of the horizontally polarized light incident on the sheet is 0.865 W/m2. Determine the angle that the transmission axis of the polarizing sheet makes with the horizontal.arrow_forward
- What is the wavelength of light if its frequency is 1.4 x 104 Hz? Assume the light is traveling through a vacuum.arrow_forwardTwo laser beams with wavelengths λ1=596 nm and λ;2=574 nm are aimed at the same point. The electric field from each laser in the y-direction behaves as the function, Ei,y(x,t)=A(sin2πfit−2πxλi) for i=1 or 2, and they propagate at a speed of light c. Both fields have the same amplitude, A=1 N/C. Find the value of the total electric field in the y-direction Ey, in newtons per coulomb, at a time of exactly one femtosecond (10−15 seconds) if the position the lasers is aimed at is exactly 100 nanometers away from each laser.arrow_forwardVisible light waves, heat rays, X-rays and radio waves all travel at the same speed in vacuum. a) True b) Falsearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning