Answered: A black body at a high temperature T K… | bartleby

Related questions

Question

A black body at a high temperature T K radiates energy at the rate of E Wm-2. When the temperature falls to T/2 K, the radiated energy will be ___________

a) E/4

b) E/2

c) 2E

d) E/16

Expert Solution

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

Other things being equal, what would the earth's average temperature have been historically (before the Industrial Revolution) if it reflected only 24% of the light from the sun instead of 30%? The earth's average temperature would be K. xt > Mc Graw Hill < Prev 4 of 15 MacBook Pro esc G Search or type URL ! 23 2$ & 1 2 3 4 6 7 8 Q W E R Y P A F G H K C V B N
(b) When ultraviolet radiation of wavelength 58.4 nm from a helium lamp is directed on to a sample ofkrypton, electrons are ejected with a speed of 1.59 × 106 m s−1. Calculate the ionisation energy ofkrypton.
The power emitted by a blackbody is proportional to T^4. If the temperature of the blackbody goes from 3000K to 6000K, by how much (by what factor, 2, 3, 8, etc) does the power increase?
Estimate the thermally Doppler-broadened line widths for the hydrogen Lya, C III, O VI, and Mg X lines are given below; use the temperatures provided. Take the masses of H, c, O, and Mg to be 1 u, 12 u, 16 u, and 24 u, respectively. The 121.6-nm Lyman-alpha (Lya) emission line of hydrogen (n=2 →n =1) is produced at the top of the chromosphere at 20,000 K, the ClII 97.7-nm line originates at a level where the temperature is 90,000 K, the 103.2-nm line of O VI occurs at 300,000 K, and Mg X creates a 62.5-nm line at 1.4 x 106 K.
Calculate the following energies: the kinetic energy of a lead K-shell photoelectron following a photoelectric interaction of a 662 keV gamma ray (K-shell binding energy of Pb = 88 keV).
Suppose a star with radius 8.51 108 m has a peak wavelength of 689 nm in the spectrum of its emitted radiation. (a) Find the energy of a photon with this wavelength. J/photon(b) What is the surface temperature of the star? K(c) At what rate is energy emitted from the star in the form of radiation? Assume the star is a blackbody (e = 1). W(d) Using the answer to part (a), estimate the rate at which photons leave the surface of the star. photons/s
The unit surface of a black body at 37 °C radiates a number of electromagnetic waves with a certain wavelength. If the Wien constant is 2.898 x 10^-3 m.k, then the wavelength at which the blackbody radiation density per unit length has a maximum value is
What temperature, in ∘C , is a blackbody whose emission spectrum peaks at 2.90 μm ?
Only do parts d & e
Suppose a blackbody at 425 K radiates just enough heat in 15.0 min to boil water for a cup of tea. How much time t will it take to boil the same water if the temperature of the radiator is 525 K? t = ? s
The blackbody radiation emitted from a furnace peaks at a wavelength of 3.3 10-6 m (0.0000033 m). What is the temperature inside the furnace In K?
Part A: If X=2.44 micrometers, what is the surface temperature of object A? Enter the numerical values in SI units. Part B: Which statement(s) characterize(s) the photons radiated by the object A? (Check any/all correct answers) a) The maximum wavelength of the mitted photons is X. b) All the emitted photons have a wavelength of X. c) Most (but not all) of the emitted photons have a wavelength of X.

SEE MORE QUESTIONS