Geography

Geography, 25.09.2019 06:00, kratose

Acommon radio wavelength observed coming from astronomical objects is 21 cm. what temperature is associated with this radiation? 1st attempt see hint feedback 13.8

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Physics, 05.07.2019 04:20, dondre54

wien's displacement constant: planck's radiation law tells us that the intensity of radiation per unit area and per unit wavelength λ from a black body at temperature t is where h is planck's constant, c is the speed of light, and kb is boltzmann's con- stant. (i) show by differentiating that the wavelength λ at which the emitted radiation is strongest is the solution of the equation 5e make the substitution x = hc/1kbt and hence show that the wavelength of maximum radiation obeys the wien displacement law where the so-called wien displacement constant is b = hc/kr, and x is the solution to the nonlinear equation (ii) write a program to solve this equation to an accuracy of 10-6 using a method of your choice, and hence find a value for the displacement constant. [10] (iii) the displacement law is the basis for the method of optical pyrometry, a method for measuring the temperatures of objects by observing the color of the thermal radiation they emit. the method is commonly used to estimate the surface temperatures of astronomical bodies, such as the sun. the wavelength peak in the sun's emitted radiation falls at λ = 502 nm. from the equations above and your value of the displacement constant, estimate the surface temperature of the sun.

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Physics, 23.07.2019 16:20, coltonsteighner

Why don't we observe the debroglie wavelength of everyday macroscopic objects, such as a moving car? the macroscopic objects are moving too slowly for the wavelength to be observed macroscopic objects do not possess wave-like properties the macroscopic objects are moving too quickly for the wavelength to be observed the wavelength is too small relative to the moving object to be observed the wavelength is too large relative to the moving object to be observed?

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Geography, 25.09.2019 06:00, balwinderdev

Our sun emits most of its radiation at a wavelength of 550nm. if a star were 5.00 times hotter than our sun, it would emit most of its radiation at a wavelength of nm 1st attempt feedback q see hint our sun emits most of its radiation at a wavelength of 550 nm. if a star were 5.00 times hotter than our sun, it would emit most of its radiation at a wavelength of 275 nm

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Chemistry, 16.10.2019 23:30, qveenvslayin

Acommon radio wavelength observed coming from astronomical objects is 21 cm. what temperature is associated with this radiation?

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