1. [5] Based on the simple blackbody radiation model described in the Lectures of Climate Change,...
1. [5] Based on the simple blackbody radiation model described in the Lectures of Climate Change, answer the following question. The planets Mars and Venus have albedo values of 0.15 and 0.75, and observed surface temperatures of approximately 220 K and 700 K, respectively. The average distance of Mars from the sun is 2.28 x 108 km, and the average distance of Venus is 1.08 x 108 km. Given that the radius of the sun is 7 x 108 m, and the energy flux at the surface of the sun is 6.28 x 107 W/m2 , what is the extent of the greenhouse effect for Mars and Venus, respectively, measured in degree kelvin? (Hint: the key question is to find the solar constants for Mars and Venus first to calculate their surface temperatures, based on the fact that the sun is radiating out through concentric spheres)
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1. [5] Based on the simple blackbody radiation model described
in the Lectures of Climate Change,...
Answer all parts except the ones refering to lecture slides. Temperatures on planets. To a good...
Answer all parts except the ones refering to lecture slides.
Temperatures on planets. To a good approximation, stars and planets emit their energy like a black body, which means the energy flux (energy per unit area and per unit time) at the solar surface (radius R_s = 7 times 10^8 m) is given by F = sigma_SBT^4, where sigma_SB = 5.67 times 10^8 W m^-2 K^-41 is the Stefan-Boltzmann constant. [Remember, energy per unit time is power and it- is...
A synchronous satellite, which always remains above the same point on a planet's equator, is put...
A synchronous satellite, which always remains above the same
point on a planet's equator, is put in orbit around Mars so that
scientists can study a surface feature. Mars rotates once every
24.6 h. Use the data of this table to find the altitude of the
satellite. Please show how you figured this out step by step!
Useful Planetary Data Mean 10-19 ..3 Mean Distance Radius (m Mass (kg) Period (s) Body from Sun (m) 2.48 X 10 7.60 x...
1 (10 pts). In 1601 the German astronomer Johannes Kepler became director of the Prague Observatory....
1 (10 pts). In 1601 the German astronomer Johannes Kepler became director of the Prague Observatory. Kepler had been helping Tycho Brache in collecting 13 years of observations on relative motion of the planet Mars. By 1609, Kepler had formulated his first two laws of planetary motion: i. Each planet moves on an ellipse with the sun at one focus. ii. For each planet, the line from the sun to the planet sweeps out equal areas is equal times. Kepler's...
Pluto -1.4 x 10 1.5 x 10 1.02 X 1 Moon 7.36 x 1022 1.991 x...
Pluto -1.4 x 10 1.5 x 10 1.02 X 1 Moon 7.36 x 1022 1.991 x 1030 1.74 x 106 6.96 x 108 Sun -13 POINTS SERCP11 7.5.P.044. A 716-kg satellite is in a circular orbit about Earth at a height above Earth equal to Earth's mean radius. (a) Find the satellite's orbital speed. m /s (b) Find the period of its revolution. (c) Find the gravitational force acting on it. Need Help? Read it -18 POINTS SERCP9 7.P.031.MI.FB. A...
Can someone help me with this question and show all work 1) Planet Velocities and Energy...
Can someone help me with this question and show all
work
1) Planet Velocities and Energy (33 pts) We talked about how planet formation involves the collisions of bodies (planetesimals, embryos) leading to the growth (and heating) of a planet. Let's think about the velocities and energies involved here. a) The speed of a body in its orbit around the Sun is given by the equation: Here Vis the speed of the body in m/s, G is the gravitational constant,...
Please use the formulate sheet and show all steps to make sure the question is worth...
Please use the formulate sheet and show all steps to make sure
the question is worth any points
a) The initial ratio of deuterium (D) to hydrogen (H) in a planet's atmosphere was 175000; however, the present ratio is 1/1500 and the initial and final abundances of D are 5 x 10° atoms per m3 and 9 x 106 atoms per m2, respectively. What fraction of deuterium has been lost, and what fraction of hydrogen has been lost in this...
Answer all parts except the ones refering to lecture slides.
Temperatures on planets. To a good approximation, stars and planets emit their energy like a black body, which means the energy flux (energy per unit area and per unit time) at the solar surface (radius R_s = 7 times 10^8 m) is given by F = sigma_SBT^4, where sigma_SB = 5.67 times 10^8 W m^-2 K^-41 is the Stefan-Boltzmann constant. [Remember, energy per unit time is power and it- is...
A synchronous satellite, which always remains above the same
point on a planet's equator, is put in orbit around Mars so that
scientists can study a surface feature. Mars rotates once every
24.6 h. Use the data of this table to find the altitude of the
satellite. Please show how you figured this out step by step!
Useful Planetary Data Mean 10-19 ..3 Mean Distance Radius (m Mass (kg) Period (s) Body from Sun (m) 2.48 X 10 7.60 x...
1 (10 pts). In 1601 the German astronomer Johannes Kepler became director of the Prague Observatory. Kepler had been helping Tycho Brache in collecting 13 years of observations on relative motion of the planet Mars. By 1609, Kepler had formulated his first two laws of planetary motion: i. Each planet moves on an ellipse with the sun at one focus. ii. For each planet, the line from the sun to the planet sweeps out equal areas is equal times. Kepler's...
Pluto -1.4 x 10 1.5 x 10 1.02 X 1 Moon 7.36 x 1022 1.991 x 1030 1.74 x 106 6.96 x 108 Sun -13 POINTS SERCP11 7.5.P.044. A 716-kg satellite is in a circular orbit about Earth at a height above Earth equal to Earth's mean radius. (a) Find the satellite's orbital speed. m /s (b) Find the period of its revolution. (c) Find the gravitational force acting on it. Need Help? Read it -18 POINTS SERCP9 7.P.031.MI.FB. A...
Can someone help me with this question and show all
work
1) Planet Velocities and Energy (33 pts) We talked about how planet formation involves the collisions of bodies (planetesimals, embryos) leading to the growth (and heating) of a planet. Let's think about the velocities and energies involved here. a) The speed of a body in its orbit around the Sun is given by the equation: Here Vis the speed of the body in m/s, G is the gravitational constant,...
Please use the formulate sheet and show all steps to make sure
the question is worth any points
a) The initial ratio of deuterium (D) to hydrogen (H) in a planet's atmosphere was 175000; however, the present ratio is 1/1500 and the initial and final abundances of D are 5 x 10° atoms per m3 and 9 x 106 atoms per m2, respectively. What fraction of deuterium has been lost, and what fraction of hydrogen has been lost in this...
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