Using a formula, we have
S = S2 - S1 = (Q / T2) - (Q / T1)
S = [(6000 J) / (291 K) - (6000 J) / (5500 K)]
S = (20836 / 1067) J/K
S = 19.5 J/K
The surface of the Sun is approximately 5, 500 K, and the temperature of the Earth's...
The Sun shines with a blackbody temperature of 5780 K and a total power output of 3.8 x 1026 w. The Sun has been doing this for 4.5 x 10 yr, during which time the surface temperature has increased by a few percent and the luminosity by 20%, ie. they have remained roughly constant. (a) (5 marks) Use the heat-flow formula for entropy change to calculate the total entropy in all the sunlight the Sun has ever emitted. (b) (3...
Today the Earth's effective temperature is 255 K and its average surface temperature is 288 K. Some scientists claim that in year 2040 Earth's albedo will decrease from its current value of 0.3 to 0.14 because of the reduction in the glaciers. If everything else remains the same what will be the average surface temperature of the Earth in 2040? The temperature of the Earth in 2040 will be TEarth = K
The surface of the sun has a temperature of approximately 5800 K. To good approximation we can treat it as a blackbody. (a) What is the peak-intensity wavelength λm? (b) What is the total radiated power per unit area? (c) Find the power per unit area radiated from the surface of the sun in the wavelength range 600.0 to 605.0 nm.
Warm Up The surface of the Earth receives approximately 1000 W/m2 (Watts per square meter) of energy from the Sun. This number rises to about 1386 W/m2 in the upper atmosphere (r 6.4 x 106 m) The sun is 1 AU (1.496 x 1011 m) away Over what area is the Sun's energy spread at the Earth's distance? How much power is the Sun releasing? Warm Up The surface of the Earth receives approximately 1000 W/m2 (Watts per square meter)...
The surface temperature of the sun is about 5800 K. The radii of the earth and the sun are 6.40x106 m and 6.95x108 m, respectively. The earth is 1.49x1011 m from the sun. Calculate the blackbody temperature of the earth assuming the earth is in steady state with the power absorbed versus power emitted.
The temperature within the Earth's crust increases about 1.0 C∘ for each 30 m of depth. The thermal conductivity of the crust is 0.80 W/C∘⋅m. a)Determine the heat transferred from the interior to the surface for the entire Earth in 7.0 h. Answer for this is : 3.4×1017 b)Compare this heat to the amount of energy incident on the Earth in 7.0 h due to radiation from the Sun. Am not sure how to do part B. Any help is...
The Sun is 1 AU from the earth and has a surface temperature of ~5800K. a) what is the heat flux from the surface of the sun? What is the heat flux from the sun that arrives to the earth?
The temperature within the Earth's crust increases about 1.0 C∘ for each 30 m of depth. The thermal conductivity of the crust is 0.80 W/C∘⋅m. Part A Determine the heat transferred from the interior to the surface for the entire Earth in 9.0 h . Express your answer using two significant figures. Part B Compare this heat to the amount of energy incident on the Earth in 9.0 h due to radiation from the Sun. Express your answer using two...
3. The sun can be approximated as a spherical black body with a surface temperature of 5762 K. The irradiation from the sun, as measured by a satellite in earth orbit, is 1353 W/m2. The distance from the earth to the sun is approximately 1.5 x 1011 m. Assuming that the sun radiates evenly in all directions, estimate the diameter of the sun.
4. (5pt) Below is the spectrum of our sun measured at the earth's surface: 14 1.2 1.0 0.8 0.6 0.4 0.2 0.0 400 600 800 1000 Wavelength (nm) a. At approximately what wavelength is the sun's irradiance at a maximum? Human eyesight is centered in the green region of the spectrum; is this a coincidence? Spectral Irradiance re-Laboratory Assignment, continued b. There is still a significant amount of light past 1000 nm. Calculate the energy of a photon at this...