Physics for Scientists and Engineers with Modern Physics, Technology Update
9th Edition
ISBN: 9781305401969
Author: SERWAY, Raymond A.; Jewett, John W.
Publisher: Cengage Learning
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Chapter 34, Problem 66AP
(a)
To determine
The
(b)
To determine
The comparison of the radiation pressure with respect to the atmospheric pressure which is
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The Earth reflects approximately 38.0% of the incident sunlight from its clouds and surface. (a) Given that the intensity of solar radiation is 1 340 W/m2, what is the radiation pressure on the Earth, in pascals, when the Sun is straight overhead? (b) Compare this to normal atmospheric pressure at the Earth’s surface, which is 101 kPa.
Assume that a certain location on the Earth reflects 33.0% of the incident sunlight from its clouds and surface.
(a) Given that the intensity of solar radiation at the top of the atmosphere is 1369 W/m2, find the radiation pressure on the Earth, in pascals, at the location where the Sun is
straight overhead.
Pa
(b) State how this quantity compares with normal atmospheric pressure at the Earth's surface, which is 101 kPa.
Patm
times ---Select--- v than radiation pressure
Prad
The average intensity of the solar radiation that strikes normally on a surface just outside Earth’s atmosphere is 1.4 kW/m2. (a) What radiation pressure pr is exerted on this surface, assuming complete absorption? (b) For comparison, find the ratio of pr to Earth’s sea-level atmospheric pressure, which is 1.0 * 10^5 Pa.
Chapter 34 Solutions
Physics for Scientists and Engineers with Modern Physics, Technology Update
Ch. 34.1 - Prob. 34.1QQCh. 34.3 - What is the phase difference between the...Ch. 34.3 - Prob. 34.3QQCh. 34.5 - Prob. 34.4QQCh. 34.6 - Prob. 34.5QQCh. 34.7 - Prob. 34.6QQCh. 34.7 - Prob. 34.7QQCh. 34 - Prob. 1OQCh. 34 - Prob. 2OQCh. 34 - Prob. 3OQ
Ch. 34 - Prob. 4OQCh. 34 - Prob. 5OQCh. 34 - Prob. 6OQCh. 34 - Prob. 7OQCh. 34 - Prob. 8OQCh. 34 - Prob. 9OQCh. 34 - Prob. 10OQCh. 34 - Prob. 11OQCh. 34 - Prob. 1CQCh. 34 - Prob. 2CQCh. 34 - Prob. 3CQCh. 34 - Prob. 4CQCh. 34 - Prob. 5CQCh. 34 - Prob. 6CQCh. 34 - Prob. 7CQCh. 34 - Do Maxwells equations allow for the existence of...Ch. 34 - Prob. 9CQCh. 34 - Prob. 10CQCh. 34 - Prob. 11CQCh. 34 - Prob. 12CQCh. 34 - Prob. 13CQCh. 34 - Prob. 1PCh. 34 - Prob. 2PCh. 34 - Prob. 3PCh. 34 - Prob. 4PCh. 34 - Prob. 5PCh. 34 - Prob. 6PCh. 34 - Prob. 7PCh. 34 - Prob. 8PCh. 34 - The distance to the North Star, Polaris, is...Ch. 34 - Prob. 10PCh. 34 - Prob. 11PCh. 34 - Prob. 12PCh. 34 - Prob. 13PCh. 34 - Prob. 14PCh. 34 - Prob. 15PCh. 34 - Prob. 16PCh. 34 - Prob. 17PCh. 34 - Prob. 18PCh. 34 - Prob. 19PCh. 34 - Prob. 20PCh. 34 - If the intensity of sunlight at the Earths surface...Ch. 34 - Prob. 22PCh. 34 - Prob. 23PCh. 34 - Prob. 24PCh. 34 - Prob. 25PCh. 34 - Review. Model the electromagnetic wave in a...Ch. 34 - Prob. 27PCh. 34 - Prob. 28PCh. 34 - Prob. 29PCh. 34 - Prob. 30PCh. 34 - Prob. 31PCh. 34 - Prob. 32PCh. 34 - Prob. 33PCh. 34 - Prob. 34PCh. 34 - Prob. 35PCh. 34 - Prob. 36PCh. 34 - Prob. 37PCh. 34 - Prob. 38PCh. 34 - Prob. 39PCh. 34 - The intensity of sunlight at the Earths distance...Ch. 34 - Prob. 41PCh. 34 - Prob. 42PCh. 34 - Prob. 43PCh. 34 - Extremely low-frequency (ELF) waves that can...Ch. 34 - Prob. 45PCh. 34 - A large, flat sheet carries a uniformly...Ch. 34 - Prob. 47PCh. 34 - Prob. 48PCh. 34 - Prob. 49PCh. 34 - Prob. 50PCh. 34 - Prob. 51PCh. 34 - Prob. 52PCh. 34 - Prob. 53PCh. 34 - Prob. 54APCh. 34 - Prob. 55APCh. 34 - Prob. 56APCh. 34 - Prob. 57APCh. 34 - Prob. 58APCh. 34 - One goal of the Russian space program is to...Ch. 34 - Prob. 60APCh. 34 - Prob. 61APCh. 34 - Prob. 62APCh. 34 - Prob. 63APCh. 34 - Prob. 64APCh. 34 - Prob. 65APCh. 34 - Prob. 66APCh. 34 - Prob. 67APCh. 34 - Prob. 68APCh. 34 - Prob. 69APCh. 34 - Prob. 70APCh. 34 - Prob. 71APCh. 34 - Prob. 72APCh. 34 - Prob. 73APCh. 34 - Prob. 74APCh. 34 - Prob. 75APCh. 34 - Prob. 76CPCh. 34 - Prob. 77CPCh. 34 - Prob. 78CPCh. 34 - Prob. 79CP
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- In what range of electromagnetic radiation are the electromagnetic waves emitted by power lines in a country that uses 50-Hz ac current?arrow_forwardWhat is the intensity of an electromagnetic wave with a peak electric field strength of 125 Vim?arrow_forwardIf the electric field of an electromagnetic wave is oscillating along the z-axis and the magnetic field is oscillating along the x-axis, in what possible direction is the wave traveling?arrow_forward
- A plane electromagnetic wave travels northward. At one instant, its electric field has a magnitude of 6.0 V/m and points eastward. What are the magnitude and direction of the magnetic field at this instant?arrow_forwardCan the human body detect electromagnetic radiation that is outside the visible region of the spectrum?arrow_forwardSuppose the maximum safe intensity of microwaves for human exposure is taken to be 1,00 W/m2. (a) If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away must you be to be exposed to an intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection, (b) What is the maximum electric field strength at the safe intensity? (Note that early radar units leaked more than modem ones do. This caused identifiable health problems, such as cataracts, for people who worked near them.)arrow_forward
- The Earth reflects approximately 38.0% of the incidentsunlight from its clouds and surface. (a) Given that theintensity of solar radiation at the top of the atmosphere is1 370 W/m2, find the radiation pressure on the Earth, inpascals, at the location where the Sun is straight overhead.(b) State how this quantity compares with normal atmosphericpressure at the Earth’s surface, which is 101 kPa.arrow_forwardA community plans to build a facility to convert solar radiation to electrical power. The community requires 2.60 MW of power, and the system to be installed has an efficiency of 30.0% (that is, 30.0% of the solar energy incident on the surface is converted to useful energy that can power the community). Assuming sunlight has a constant intensity of 1 200 W/m2, what must be the effective area of a perfectly absorbing surface used in such an installation?arrow_forwardA communications satellite orbiting the earth has solar panels that completely absorb all sunlight incident upon them. The total area A of the panel is 10 m2. (A) the intensity of the suns radiation incident upon the earth is about 1.4 kW/m2. What is the total power asborded by the panels? (B) what is the force F on the panels exerted by radiation pressure from the sunlight?arrow_forward
- The U.S. Food and Drug Administration limits the radiation leakage of microwave ovens to no more than 5.0 mW/cm2 at a distance of 2.0 in. A typical cell phone, which also transmits microwaves, has a peak output power of about 2.0 W. (a) Approximating the cell phone as a point source, calculate the radiation intensity of a cell phone at a distance of 2.0 in. How does the answer compare with the maximum allowable microwave oven leakage? (b) The distance from your ear to your brain is about 2 in. What would the radiation intensity in your brain be if you used a Bluetooth headset, keeping the phone in your pocket, 1.0 m away from your brain? Most headsets are so-called Class 2 devices with a maximum output power of 2.5 mW.arrow_forwardRadiation from the Sun reaching Earth (just outside the atmosphere) has an intensity of 1.41 kW/m². (a) Assuming that Earth (and its atmosphere) behaves like a flat disk perpendicular to the Sun's rays and that all the incident energy is absorbed, calculate the force on Earth due to radiation pressure. (b) For comparison, calculate the force due to the Sun's gravitational attraction. Assume that the speed of light and Earth radius are 2.998 × 108 m/s and 6.37 thousand km respectively. (a) Number i Units (b) Number Unitsarrow_forwardSolar radiation reaches Earth at a rate of about 1,400 W/m2. If all this energy were absorbed, what would be the average force exerted by radiation pressure on a square meter oriented at right angles to the sunlight?arrow_forward
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