4. As noted in the preceding example, the Sun delivers about 1 000 W/m² of energy to theEarth's surface via electromagnetic radiation. (a) Calculate the total power that is incident on aroof of dimensions 8.00 m ×20.0 m. (b) Determine the radiation pressure and the radiation forceexerted on the roof, assuming that the roof covering is a perfect absorber.

Answered: 4. As noted in the preceding example,…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A 13.0-mW helium-neon laser emits a beam of circular cross section with a diameter of 3.10 mm. (a) Find the maximum electric field in the beam. (b) What total energy is contained in a 1.00-m length of the beam? (c) Find the momentum carried by a 1.00-m length of the beam. Step 1 We will find the reasonable size of the electric field in a beam of bright light. At the speed of light, only a small fraction of a joule is contained in a meter-length beam. The momentum of the beam is a very small fraction of a kg. m/s. Light is described by energy and momentum but possesses no mass. Step 2 We will use the equation relating the intensity of light to the wave amplitude. From the definition of intensity, we can find the energy content of the beam of light. Then the relationship between momentum, energy, and the speed of light will give us the momentum of a length of the beam. Step 3 The intensity of light I is given by the average magnitude of the Poynting vector. We have 2 I = S₂ avg P Tr²…
Why this statement is true?The speed of electromagnetic waves in a vacuum is the same for all waves regardless of wavelength
Assume the intensity of solar radiation incident on the cloud tops of the Earth is 1 871 W/m2. (a) Taking the average Earth-Sun separation to be 1.496 x 1011 m, calculate the total power radiated by the Sun. W (b) Determine the maximum value of the electric field in the sunlight at the Earth's location. kV/m (c) Determine the maximum value of the magnetic field in the sunlight at the Earth's location. uT
A plane electromagnetic sinusoidal wave of frequency 26.4 MHz travels in free space. The speed of light is 2.99792 × 108 m/s.
An earth-orbiting satellite has solar energy–collecting panels with a total area of 4.0 m2 . If the sun’s radiation is perpendicular to the panels and is completely absorbed, find the average solar power absorbed and the average radiation-pressure force
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The intensity of the radiation that you receive in your tanning bed is 9.87 W/m2. What is the maximum electric field? Please give your answer in Volts per meter.
A stent is a cylindrical tube, usually made of metal mesh, typically associated with the preventation of heart attacks, as its designed to prevent constriction in blood vessels. Often, the stent is heated after insertion to prevent cell growth that could cause the constriction to recur. One method to heat the stent is placing the patient in a changing magnetic field, so that induced currents heat the stent. If a stainless-steel stent is 10 mm long by 3.5 mm in diameter with total resistance 25 mΩ and you model the stent as a wire loop in the optimum orientation, find the rate of change of magnetic field necessary to heat it at a rate of 240 W. Please show all work with equations and explanations (with steps).
A 16.0-mW helium–neon laser emits a beam of circular cross section with a diameter of 2.95 mm. Find the maximum electric field in the beam. What total energy is contained in a 1.00-m length of the beam? Find the momentum carried by a 1.00-m length of the beam.
The intensity of sunlight at the Earth's distance from the Sun is 1370 W/m². (a) Assume the Earth absorbs all the sunlight incident upon it. Find the total force the Sun exerts on the Earth due to radiation pressure. (b) Explain how this force compares with the Sun's gravitational attraction. Frad F. grav same direction opposite
An MRI technician moves her hand from a region of very low magnetic field strength into an MRI scanner's 2.00 T field with her finger pointing in the direction of the field.An MRI technician moves her hand from a region of very low magnetic field strength into an MRI scanner's 2.00 T field with her finger pointing in the direction of the field. Find the average emf, in millivolts, induced in her wedding ring given its diameter is 2.41 cm, and assuming it takes 0.487 s to move it into the field.
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