The Moon is Earth's only natural satellite. It has a mass of 7.34 × 1022 kg and is roughly spherical with a radius of 1.74 × 106 m. Multiple Choice Questions? 7) The average surface temperature of the moon is 26 K. Assuming a uniform temperature and a uniform emissivity of 0.9 (these are not good assumptions), estimate the total rate of heat radiated from the Moon. For this question, you may assume the Moon is spherical and its surface area is given by A = 4лR². a) 4.7 x 10" W b) 5.5 x 10" W c) 6.9 × 10" W d) 8.1 x 10" W e) 8.9 x 10" W f) 1.6 x 1016 W 8) NASA decides to place an orbiter at an elevation of 50 km above the lunar surface. What speed is required for this orbiter to maintain a circular orbit around the Moon? a) 1471 m/s b) 1543 m/s Short Answer Question c) 1654 m/s d) 2254 m/s e) 9895 m/s f) 312,900 m/s Suppose NASA decides to crash the orbiter into the Moon's surface. Assume the orbiter begins 50 km above the lunar surface with an initial speed given by your answer to Question 8; however for this question, its initial velocity is directed towards the center of the Moon. With what speed will the orbiter strike the lunar surface?
The Moon is Earth's only natural satellite. It has a mass of 7.34 × 1022 kg and is roughly spherical with a radius of 1.74 × 106 m. Multiple Choice Questions? 7) The average surface temperature of the moon is 26 K. Assuming a uniform temperature and a uniform emissivity of 0.9 (these are not good assumptions), estimate the total rate of heat radiated from the Moon. For this question, you may assume the Moon is spherical and its surface area is given by A = 4лR². a) 4.7 x 10" W b) 5.5 x 10" W c) 6.9 × 10" W d) 8.1 x 10" W e) 8.9 x 10" W f) 1.6 x 1016 W 8) NASA decides to place an orbiter at an elevation of 50 km above the lunar surface. What speed is required for this orbiter to maintain a circular orbit around the Moon? a) 1471 m/s b) 1543 m/s Short Answer Question c) 1654 m/s d) 2254 m/s e) 9895 m/s f) 312,900 m/s Suppose NASA decides to crash the orbiter into the Moon's surface. Assume the orbiter begins 50 km above the lunar surface with an initial speed given by your answer to Question 8; however for this question, its initial velocity is directed towards the center of the Moon. With what speed will the orbiter strike the lunar surface?
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter14: Heat And Heat Transfer Methods
Section: Chapter Questions
Problem 53PE: A person inhales and exhales 2.00 L of 37.0C air, evaporating 4.00102g of water from the lungs and...
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Question
Transcribed Image Text:The Moon is Earth's only natural satellite. It has a mass of 7.34 × 1022 kg and is
roughly spherical with a radius of 1.74 × 106 m.
Multiple Choice Questions?
7) The average surface temperature of the moon is 26 K. Assuming a uniform
temperature and a uniform emissivity of 0.9 (these are not good assumptions),
estimate the total rate of heat radiated from the Moon. For this question, you
may assume the Moon is spherical and its surface area is given by A = 4лR².
a) 4.7 x 10" W
b) 5.5 x 10" W
c) 6.9 × 10" W
d) 8.1 x 10" W
e)
8.9 x 10" W
f)
1.6 x 1016 W
8) NASA decides to place an orbiter at an elevation of 50 km above the lunar surface. What speed is required
for this orbiter to maintain a circular orbit around the Moon?
a) 1471 m/s
b) 1543 m/s
Short Answer Question
c)
1654 m/s
d)
2254 m/s
e)
9895 m/s
f)
312,900 m/s
Suppose NASA decides to crash the orbiter into the Moon's surface. Assume the orbiter begins 50 km above the
lunar surface with an initial speed given by your answer to Question 8; however for this question, its initial
velocity is directed towards the center of the Moon. With what speed will the orbiter strike the lunar surface?
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