Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 5, Problem 8RQ
To determine
The advantages to building an observatory on the lunar surface in the absence of the atmosphere.
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The moon has no atmosphere at all. What advantages would you have if you built an observatory
on the lunar surface?
What is the value of the IR transmission factor (f) for a Venus-like planet, if the
measured average surface temperature is 706 K? Assume the following values for the
planet: E, = 2.60x10³ W m² and a = 0.71.
Would the average temperature increase or decrease if f decreased?
The Mars Reconnaissance Orbiter
(MRO) flies at an average altitude of 280km above the Martian Surface.
If its cameras have an angular resolution of 0.2 arc seconds, what is the
size of the smallest objects that the
MRO
can detect on the Martian surface?
Use the
equation:
S =x × d / 206265 arcseconds / radian
, where S is the true size of the object, d is the distance from the detector to the object, and x is the angular size of the object. Your answer will be in km (you can
ignore the radians unit (it should appear, but the equation made a simplifying assumption that dropped it out.
Chapter 5 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - Prob. 1DQCh. 5 - Consider the “atmospheric windows” of Earth’s...Ch. 5 - The thickness of the plastic in plastic bags is...Ch. 5 - What is the wavelength of radio waves transmitted...Ch. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - H does the resolving power of the 5-rn telescope...Ch. 5 - If you build a telescope with a focal length of...Ch. 5 - Prob. 9PCh. 5 - Prob. 10PCh. 5 - Prob. 1LTLCh. 5 - The star images in the photo in Figure UN 5-4 are...Ch. 5 - The X-ray image in Figure UN 5-5 shows the remains...
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- Why is Moon described as a 'silent planet'?arrow_forwardItem 12 Part A What is the ratio of the sunlight intensity reaching Pluto compared with the sunlight intensity reaching Earth? (On average, Pluto is 39 times as far from the Sun as is Earth.) Express your answer using two significant figures. V—| ΑΣΦ IPluto TEarth Submit Request Answer ?arrow_forwardThe sun is 150,000,000 kmkm from earth; its diameter is 1,400,000 kmkm. For a science project on solar power, a student uses a 24-cmcm-diameter converging mirror with a focal length of 51 cmcm to focus sunlight onto an object. This casts an image of the sun on the object. For the most intense heat, the image of the sun should be in focus. Where should the object be placed? Express your answer with the appropriate units.arrow_forward
- The Hubble Space Telescope has a diameter of 2.40 m. (a) What is the smallest crater it could resolve on the Moon? (Distance to the Moon is 3.84x108 m) (b) What is the answer to part (a) in feet? (1 meter = 3.281 feet)arrow_forwardWhat will be the minimum size of a Martian surface feature resolvable during the 2003 opposition by an Earth-based telescope with an angular resolution of 0.05"?arrow_forwardQuestion 2: Planet Mars Planetary Attribute Albedo Radius Gravitational acceleration Mean distance from sun Surface pressure Symbol a R (km) g (m/s²) D (km) Po (kPa) Earth 0.29 6378 9.8 150 x 106 101 Mars 0.25 3395 3.7 228 x 106 0.6 (a) Calculate an appropriate value for shortwave solar radiation (SM) incident at the top of the Martian atmosphere (answer in W/m²). The corresponding value for Earth, SE = 1360 W/m². (b) Estimate the average surface temperature on Mars (answer in degrees Kelvin) using a suitable radiative energy balance. The greenhouse effect can be neglected for Mars. (c) Estimate the mass of the Martian atmosphere (answer in kg).arrow_forward
- A surprisingly large number of people in the world don’t believe that astronauts havewalked on the Moon. They believe the Moon landing to have been a hoax. One argumentthey use is that if there are astronaut footprints on the Moon, we should be able to seethem using a powerful telescope. The fact that we do not, they say, is evidence that theywere never there.The Lunar Reconnaissance Orbiter (LRO) is a NASA robotic spacecraft currently orbitingthe Moon. The LRO gets as close as 35 km to the Moon’s surface. The diameter ofthe camera’s primary mirror is 195 mm. If the camera is sensitive to optical light at awavelength of 600 nm, show that it would not be able to spatially resolve a foot print ofphysical length 30 cm when it is 35 km above the Moon’s surface.Tip: You’ll need to calculate the angular size of the footprint, as seen from a height of35 km. θ = S/D, where S is the physical size of the footprint and D = 35 km, is theangular size of the footprint in radians.arrow_forwardWhy does the Moon not have an atmosphere?arrow_forwardGive several reasons Mercury would be a particularly unpleasant place to build an astronomical observatory.arrow_forward
- The dark areas on the moon’s surface are called maria, Latin for “seas,” and were once thought to be bodies of water. In fact, the maria are not “seas” at all, but plains of solidified lava. Given that there is no atmosphere on the moon, how can you explain the absence of liquid water on the moon’s surface?arrow_forwardChoose the BEST answer to the following: When the shadow of the Moon falls on Earth, we have a (a) lunar eclipse. (b) solar eclipse (c) solar eclipse if it’s daytime and lunar eclipse if it’s nighttime. (d) very dangerous event.arrow_forwardPure, solid water ice has an albedo A≈0.35. What is the minimum distance from the Sun at which a rapidly rotating ice cube would remain frozen? Between which two planets does this distance lie?arrow_forward
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