Answered: 2. From the black body radiation, a… | bartleby

Related questions

Question

2. From the black body radiation, a black body is an enclosure that absorbs very
large collection of photons, so that inside the enclosure the total number of
photons is not fixed. This causes an electromagnetic radiation from the black
body.
(a) Calculate the mean energy per unit volume, (w.T), (that depend on the
frequency w and temperature T).
(b) Calculate the total mean energy per unit volume, (T), (that depend only
on temperature T, integrate all the frequency w).

Expert Solution

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

·Shown here is the visible part of the spectrum of some gas. There are 11 lines. There could be 6. more, they just aren't in the wavelength range of the spectrum. The wavelength increases toward the right. :.. de f gh k (a) Which line or lines correspond(s) to the two closest spaced energy levels? Explain. (b) Which line or lines correspond(s) to the two farthest spaced energy levels? Explain. (c) What is the minimum number of energy levels in an atom of the gas that could produce the lines in this spectrum? Explain.
In kinetic theory of gases, atoms are modeled as point masses m with mean speed v related to temperature T by m v^2 = 3 k T, where k is Boltzmann’s constant. Assuming gas atoms travel several thousand Angstroms between collisions with each other, how cool would hydrogen gas need to be before quantum mechanics would have to be taken into consideration?
5. Calculate the total power radiated per unit area by a tungsten filament at a temperature of 3000. K. (Assume that the filament is an ideal radiator.) (b) If the tungsten filament of a lightbulb is rated at 75.0 W, what is the surface area of the filament? (Assume that the main energy loss is due to radiation.)
1.2) In a region of gas where the optical depth is 2.0, what percentage of photons can escape without being scattered or absorbed?
Imagine a photon gas at inital temperature of T=100K . What is the temperature of the photon gas after it has undegone a reversible adiabatic expansion to 4 times its original volume ? a) 63K b) 400K c) 100K d) 37K
Question 9 1 pts What is the total irradiance of a blackbody at the temperature of 200K. Provide you answer in units of W/m2.