The star 51 Pegasi has about the same mass and luminosity as our Sun and is orbited by a planet with an orbital period of 4.23 days and mass estimated to be 0.6 times the mass of Jupiter.

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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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v Correct
The star 51 Pegasi has about the same mass and luminosity as our
Sun and is orbited by a planet with an orbital period of 4.23 days and
mass estimated to be 0.6 times the mass of Jupiter.
Part B
Suppose the planet reflects 20% of the incoming sunlight. Calculate its "no greenhouse" average temperature. How does this temperature compare to that of Earth?
Express your answer in kelvins using three significant figures.
Talear = 1170 K
Submit
Previous Answers
v Correct
Part C
Calculate its "no greenhouse" average temperature of the planet, but assuming that the planet is covered in bright clouds that reflect 75% of the incoming sunlight.
Express your answer in kelvins using three significant figures.
Πνα ΑΣφ
Taloudy = 946.96
K
Submit
Previous Answers Request Answer
X Incorrect; Try Again; 5 attempts remaining
Transcribed Image Text:v Correct The star 51 Pegasi has about the same mass and luminosity as our Sun and is orbited by a planet with an orbital period of 4.23 days and mass estimated to be 0.6 times the mass of Jupiter. Part B Suppose the planet reflects 20% of the incoming sunlight. Calculate its "no greenhouse" average temperature. How does this temperature compare to that of Earth? Express your answer in kelvins using three significant figures. Talear = 1170 K Submit Previous Answers v Correct Part C Calculate its "no greenhouse" average temperature of the planet, but assuming that the planet is covered in bright clouds that reflect 75% of the incoming sunlight. Express your answer in kelvins using three significant figures. Πνα ΑΣφ Taloudy = 946.96 K Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining
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