Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Chapter 30, Problem 3PCE
To determine
The most intense radiation emitted by the earth into the outer space.
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The temperature of a student's skin is 33.0°C. At what wavelength does the radiation emitted from the skin reach its peak?
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1a. The Intensity of the radiation incident at the earth from the sun is 1380Wm^-2. If the distance from the Sun to the earth is 1.5x10^11m calculate the total power radiated by the Sun.
b. In a solar panel 500g of water flow through the pipes in 1 minute. If the temperature the temperature is raised by 20°C how much solar power was absorbed by the water?
c. There are plans to build a lot of wind turbines in the sea. Give two advantages of building turbines in the sea compared to land.
d. The power in a length of water wave is 1MW. Calculate the power in the wave if the amplitude doubles.
The thermal radiation from the earth’s surface peaks at a wavelength of approximately 10 μm. If the surface of the earth warms, this peak willA. Shift to a longer wavelength.B. Stay the same.C. Shift to a shorter wavelength.
Chapter 30 Solutions
Physics (5th Edition)
Ch. 30.1 - Prob. 1EYUCh. 30.2 - Prob. 2EYUCh. 30.3 - Prob. 3EYUCh. 30.4 - Prob. 4EYUCh. 30.5 - Prob. 5EYUCh. 30.6 - Prob. 6EYUCh. 30.7 - Prob. 7EYUCh. 30 - Prob. 1CQCh. 30 - Prob. 2CQCh. 30 - Prob. 3CQ
Ch. 30 - Prob. 4CQCh. 30 - Prob. 5CQCh. 30 - Prob. 6CQCh. 30 - Prob. 7CQCh. 30 - Prob. 8CQCh. 30 - Prob. 9CQCh. 30 - Prob. 10CQCh. 30 - Prob. 1PCECh. 30 - Prob. 2PCECh. 30 - Prob. 3PCECh. 30 - The Sun has a surface temperature of about 5800 K....Ch. 30 - Prob. 5PCECh. 30 - Prob. 6PCECh. 30 - (a) By what factor does the peak frequency change...Ch. 30 - Prob. 8PCECh. 30 - Prob. 9PCECh. 30 - Prob. 10PCECh. 30 - Prob. 11PCECh. 30 - Prob. 12PCECh. 30 - Prob. 13PCECh. 30 - Prob. 14PCECh. 30 - Prob. 15PCECh. 30 - Prob. 16PCECh. 30 - Prob. 17PCECh. 30 - Prob. 18PCECh. 30 - Prob. 19PCECh. 30 - Prob. 20PCECh. 30 - Prob. 21PCECh. 30 - Prob. 22PCECh. 30 - Prob. 23PCECh. 30 - Prob. 24PCECh. 30 - Prob. 25PCECh. 30 - Prob. 26PCECh. 30 - Prob. 27PCECh. 30 - Prob. 28PCECh. 30 - Prob. 29PCECh. 30 - Prob. 30PCECh. 30 - Prob. 31PCECh. 30 - Prob. 32PCECh. 30 - Prob. 33PCECh. 30 - Prob. 34PCECh. 30 - Prob. 35PCECh. 30 - BIO Owl Vision Owls have large, sensitive eyes for...Ch. 30 - Prob. 37PCECh. 30 - Prob. 38PCECh. 30 - Prob. 39PCECh. 30 - Prob. 40PCECh. 30 - Prob. 41PCECh. 30 - Prob. 42PCECh. 30 - Prob. 43PCECh. 30 - Prob. 44PCECh. 30 - Prob. 45PCECh. 30 - Prob. 46PCECh. 30 - Prob. 47PCECh. 30 - Prob. 48PCECh. 30 - Prob. 49PCECh. 30 - Prob. 50PCECh. 30 - Prob. 51PCECh. 30 - Prob. 52PCECh. 30 - Prob. 53PCECh. 30 - Prob. 54PCECh. 30 - Prob. 55PCECh. 30 - Prob. 56PCECh. 30 - Prob. 57PCECh. 30 - Prob. 58PCECh. 30 - Prob. 59PCECh. 30 - Prob. 60PCECh. 30 - Prob. 61PCECh. 30 - Prob. 62PCECh. 30 - Prob. 63PCECh. 30 - Prob. 64PCECh. 30 - Prob. 65PCECh. 30 - Prob. 66PCECh. 30 - Prob. 67PCECh. 30 - Prob. 68PCECh. 30 - Prob. 69PCECh. 30 - Prob. 70PCECh. 30 - Prob. 71PCECh. 30 - Prob. 72PCECh. 30 - Prob. 73PCECh. 30 - Prob. 74PCECh. 30 - Prob. 75PCECh. 30 - Prob. 76PCECh. 30 - Prob. 77PCECh. 30 - Prob. 78PCECh. 30 - Prob. 79PCECh. 30 - Prob. 80GPCh. 30 - Prob. 81GPCh. 30 - Prob. 82GPCh. 30 - Prob. 83GPCh. 30 - Prob. 84GPCh. 30 - Prob. 85GPCh. 30 - Prob. 86GPCh. 30 - Prob. 87GPCh. 30 - Prob. 88GPCh. 30 - Prob. 89GPCh. 30 - Prob. 90GPCh. 30 - Prob. 91GPCh. 30 - Prob. 92GPCh. 30 - Prob. 93GPCh. 30 - Prob. 94GPCh. 30 - Prob. 95GPCh. 30 - Prob. 96GPCh. 30 - Prob. 97PPCh. 30 - Prob. 98PPCh. 30 - Prob. 99PPCh. 30 - Prob. 100PPCh. 30 - Prob. 101PPCh. 30 - Prob. 102PP
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- The evaporation of perspiration is the primary mechanism for cooling the human body. Estimate the amount of water you will lose when you bake in the sun on the beach for an hour. Use a value of 1 000 W/m2 for the intensity of sun-light and note that the energy required to evaporate a liquid at a particular temperature is approximately equal to the sum of the energy required to raise its temperature to the boiling point and the latent heat of vaporization (determined at the boiling point).arrow_forwardrent Attempt in Progress Multiple-Concept Example 5 provides some pertinent background for this problem. The mean distance between earth and the sun is 1.50 x 1011 m. The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m2. Assuming the sun emits radiation uniformly in all directions, determine the total power radiated by the sun. i Textbook and Mediaarrow_forwardTwo stars, A and B, have the same emissivity, but the radii and surface temperatures are different with RA = 0.5RB, and TA = 2TB. Assuming the temperature of space to be negligible, which star radiates the most energy per unit time? a. Star Ab. Star Bc. Both radiate the same amount of energy per unit time.d. More information is needed in order to make a determination.arrow_forward
- Which of the following is NOT an example of a real-life example or application of radiation? A thermos will sometimes have a vacuum layer with no air or other material inside. People who fall into icy water are given shiny, reflective blankets. It's warmer when the lights are on in your home than when they're off. A person Sun-bathing. A thermos flask has a mirrored surface.arrow_forwardA3#Estimate the power per unit area of thermal radiation emitted by the Sun.arrow_forwardA second is defined as the duration o 9.19×10^9 periods of the radiation emitted by a cesium atom. Assume the radiation from the cesium atom moves at the speed of light. Calculate the wavelength of the radiation, defined as the distance travelled by it in one period. How many wavelengths of this radiation will fit in 1marrow_forward
- For a patient in a typical hospital setting, the most importantmechanism of heat loss is radiation. How does the power radiatedby a patient change when the skin temperature drops from 34 °Cto 33 °C, assuming no other changes?A. It’s now 99% of what it originally was.B. It’s now 97% of what it originally was.C. It’s now 89% of what it originally was.D. It doesn’t change.arrow_forward2. * a. A surface at 27 °C emits radiation at a rate of 100 W. At what rate does an identical surface at 54 °C emit radiation? b. Determine the wavelength of the maximum amount of radiation emitted by each surface.arrow_forward1. A sphere of surface area 100 m and temperature 500 K radiates 0.2 MW. Calculate: a. The emissivity of the surface. b. The peak wavelength of radiation emitted. C. The intensity at a distance of 100m from the centre. d. The energy absorbed per second by a 2m disc with albedo 0.6 placed with it's plane perpendicular to the direction of the radiation. e. The temperature of the disc when it reaches equilibrium (emissivity of the disc = 1). P= eAoT A = 0.00289/T G- 5.67 x 10* Wm°K* Page 1 1 1 Q +arrow_forward
- 2. Light bulbs operate at about 3000K. a. What is this temperature in Celsius?b. What is the wavelength at which the most power is emitted for a light bulb operating at 2500 K?c. What is the total power density—the intensity—radiated by a light bulb operating at 2500 K?d. What is the wavelength at which the most power is emitted for a light bulb operating at 3000 K?e. What is the total power density—the intensity—radiated by a light bulb operating at 2500 K?f. What is the ratio between the power densities emitted at 500 nm (green light—the middle of the visible light spectrum) at 2500 K to the power density emitted at 500 nm at 3000 K? Submit QuestionQuestion 2arrow_forwardGamma ray radiation has wavelengths from 1.0x10 1 to LO-10"m, whereas the wavelength region for visible light is 400 to 700 We can say that: 1. The frequency of gamma ray radiation is 2. The speed of gamma ray radiation is v visible lightarrow_forwardQ2C). Evaluate the intensity of solar radiation for 27 August 2020, given solar constant (Isc) =1800 W/m2.arrow_forward
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