(9) (a) Assuming the Sun to radiate like an ideal thermal source at a temperature of 6000 K, whatis the intensity of the solar radiation emitted in the range 530.0 nm to 532.0 nm?(b) What fraction of the total solar radiation does this represent?Hint: You can do the integral in part (a) approximately as integrand times range ofintegration since the wavelength range is very small.(10) Use the intensity of sunlight measured on Earth (I = 1400 W/m²) to estimate the (surface)temperature of the Sun. Light takes about 500 s on average to get from the sun to the earth.

Problem 9: Intensity and Fraction of Solar Radiation (a) Intensity of Solar Radiation:The intensity…

Answered: (9) (a) Assuming the Sun to radiate…

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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identify the knowns, unknown(s), appropriate formula(s) then computation 1. a). The wavelength of maximum solar emission is observed to be approximately 0.475μm. What is the surface temperature of the sun (assumed as blackbody)? (b) The temperature of the human body when having a high fever is 40 deg C. The intensity of radiation emitted by the human body is maximum at what wavelength? (c) The Cosmic Microwave Background radiation (CMB) fills the universe. If temperature of the space is 2.7 K, then CMB attains intensity maxima at what wavelength?
If a missile emits 5×106 W of power in the 2.65 - 2.80 μm band, estimate the energy collected by a detector at a range of 6.0 Earth-radii away from the target. Assume the detector has a light gathering area of 0.8 m2 and an integration time of 0.1 sec. Take the radius of the Earth to be 6371 km. Use scientific notation for your answer (e.g. 1.2×10-34 = 1.2E-34). The energy collected by the detector in 0.1 second is how many Joules?
(b) What is the de Broglie wavelength (in m) of a neutron moving at a speed of 2.49 ✕ 108 m/s? Note that the neutron is moving very close to the speed of light in this case. Therefore, we cannot use the non-relativistic approximation for momentum. What is the relativistic relationship between momentum and speed? What is the gamma factor? m (1.59E-15 is not the correct answer)
To a good approximation, the sun’s surface is a blackbody with a surfacetemperature of 5300 K. (a) At what wavelengthdoes the sun emit most strongly? (b) What is the total radiated powerper unit surface area?
Assume the intensity of solar radiation incident on the cloud tops of the Earth is 1 677 W/m². (a) Taking the average Earth-Sun separation to be 1.496 x 10¹1 m, calculate the total power radiated by the Sun. 4.905E26 x Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. 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. μT
I need the answer as soon as possible
Energy produced in the center of the Sun has a hard time finding its way out. We can estimate roughly how long it takes an average photon to get out by looking at the motion in one dimension only. On average, a photon goes about 1 cm between collisions with hydrogen nuclei or electrons and undergoes about 108 such collisions per second. (Use the hints in problem 29 if necessary. ) (a) What is the average distance traveled in any dimension per step? (b) What is the standard deviation about this value? (c) The radius of the Sun is about 7.0 x10³ m. About how many steps must a photon take before having a 32% chance of being outside the Sun in this dimension? (d) To how many years does this number of steps correspond? (1 year = 3.17 x 107 seconds).
Here you are invited to explore the process of human vision. (a) The flux of visible photons reaching Earth from the North Star is about 4 x 103 mm-2s-1. Of these photons, 30 per cent are absorbed or scattered by the atmosphere and 25 per cent, of the surviving photons are scattered by the surface of the cornea of the eye. A further 9 per cent ar absorbed inside the cornea. The area of the pupil at night is about 40 mm2 and the response t ime of the eye is about 0.1 s. Of the photons passing through the pupil, about 43 per cent are absorbed in the ocular medium. How many photons from the North Star are focused on to the retina in 0.1 s? For a continuation of this story, see R. W. Rodieck, The first steps in seeing, Sinauer (1998). (b) In the free-electron molecular orbital theory of electronic structure, the π electrons in a conjugated molecule are treated as non-interacting particles in a box of length equal to the length of the conjugated system. On the basis of this model, at what…
The half value layer (HVL) of a material is defined as the thickness of the material needed to reduce the intensity of the incident x-ray beam to half its value. Assume that the x-ray beam is monochromatic, no scattering occurs and that material A (as shown in Figure 1) is. homogeneous and has a linear attenuation coefficient (u.). Material A has an HVL of 1.5 mm. Calculate the ratio l/lz as shown in Figure 1 if x-5 mm. lo HA=?? 2x Figure 1: Schematic diagram fr question 3.
(Hand by writing ans.)A certain atom has an energy level of 3.50 eV above the ground state. When excited to this state, it remains 4.0µs, on average, before emitting a photon and returning to the ground state. i) What is the energy of the photon? What is the wavelength of the photon? ii) What is the smallest possible uncertainty in the energy of the photon?
Assume solar flux falling on a typical panel on planet earth to be 1370 Watts per square meter with sunshine at least half of the year and roughly one quarter of the earth surface bathed in sunlight daily as the planet rotates. The best panels convert photonic energy to electrical energy at about 25 % (efficiency). Given that the world consumes around 600 exaJoules (one exaJ = 1028 J) how much area would be required to power up the world with solar arrays. (Give your answer in square kilometers please!)
Only do parts d & e

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