Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 27, Problem 27Q
To determine
The reason behind the fact that telescopes designed for observing the infrared spectra of other planets need to be placed in space.
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___ cm
K
What is the wavelength (in nm) of the most intense radiation emitted from the surface of Mercury at high noon? (Hint: Use Wien's law, Amax
= 2.90 x 10° m: K
%3D
T (in K)
nm
In which band of the electromagnetic spectrum is that wavelength? (Hint: Examine the following figure.)
Visible light
Short wavelengths
Long wavelengths
4 x 107 5x 107 6x 107 7x 10meters
(400 nm) (500 nm) (600 nm) /(700 nm)
Wavelength (meters)
10 12
10 10
10
104
102
1
102
104
Gamma-
ray
Ultra-
violet
Micro-
Radio
X-ray
Infrared
wave
UHF VHF FM
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Visual
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Radio
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Opacity of
Earth's atmosphere
Question 7
What type of mission collects information about multiple planets?
Sample returns.
Rovers.
Flybys.
Atmospheric probes.
Question 8
Why are neutrinos so difficult to detect?
There are very few of them, so collecting enough to study takes a long time.
They are theoretical and may not exist.
They move so fast they pass right through the telescope.
They don't interact strongly with matter, so they will not cause a reaction on a CCD imager.
Chapter 27 Solutions
Universe
Ch. 27 - Prob. 1CCCh. 27 - Prob. 2CCCh. 27 - Prob. 3CCCh. 27 - Prob. 4CCCh. 27 - Prob. 5CCCh. 27 - Prob. 6CCCh. 27 - Prob. 7CCCh. 27 - Prob. 8CCCh. 27 - Prob. 9CCCh. 27 - Prob. 10CC
Ch. 27 - Prob. 11CCCh. 27 - Prob. 12CCCh. 27 - Prob. 13CCCh. 27 - Prob. 14CCCh. 27 - Prob. 1CLCCh. 27 - Prob. 1QCh. 27 - Prob. 2QCh. 27 - Prob. 3QCh. 27 - Prob. 4QCh. 27 - Prob. 5QCh. 27 - Prob. 6QCh. 27 - Prob. 7QCh. 27 - Prob. 8QCh. 27 - Prob. 9QCh. 27 - Prob. 10QCh. 27 - Prob. 11QCh. 27 - Prob. 12QCh. 27 - Prob. 13QCh. 27 - Prob. 14QCh. 27 - Prob. 15QCh. 27 - Prob. 16QCh. 27 - Prob. 17QCh. 27 - Prob. 18QCh. 27 - Prob. 19QCh. 27 - Prob. 20QCh. 27 - Prob. 21QCh. 27 - Prob. 22QCh. 27 - Prob. 23QCh. 27 - Prob. 24QCh. 27 - Prob. 25QCh. 27 - Prob. 26QCh. 27 - Prob. 27QCh. 27 - Prob. 28QCh. 27 - Prob. 29QCh. 27 - Prob. 30QCh. 27 - Prob. 31QCh. 27 - Prob. 32QCh. 27 - Prob. 34QCh. 27 - Prob. 35Q
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- How close to Uranus would a spacecraft have to get to obtain the same resolution as in Example 12.1 with a camera that has an angular resolution of 2 arcsec?arrow_forwardWhat produced the helium now present in the Sun’s atmosphere? In Jupiter’s atmosphere? In the Sun’s core?arrow_forwardWe have a lot of good images of the large moons of Jupiter and Saturn from the Galileo and Cassini spacecraft missions (check out NASA’s Planetary Photojournal site, at http://photojournal.jpl.nasa.gov, to see the variety). Now that the New Horizons mission has gone to Pluto, why don’t we have as many good images of all sides of Pluto and Charon?arrow_forward
- Pluto has a temperature of about 50 K. Use Wien's law to calculate the wavelength at which Pluto is brightest. (arrow_forwardThere is one part to this question. I need to know the cm. Thank you!arrow_forwardF = 9/5 C + 32 ; C = 5/9 (F - 32); K = 273 + C; Lambda = 2900/T; T^4 = I (128)(10^8); I1/I2 = ( D2 / D1 )2 Show All Calculations What is the intensity of sunlight on planet XZEON if: The intensity of direct sunlight on earth is Ie = 2.0 calories per square centimeter per minute and Planet XZEON is 7.7 times farther from the sun than the earth is.arrow_forward
- What diameter telescope is needed to resolve the separation between an Earth-like planet and its star at 550 nm if the linear separation between them is 1 AU and the star system is 1 pc from Earth?arrow_forwardMercury's orbit ranges from 46 to 70 million km from the Sun, while Earth orbits at about 150 million km. a. The Sun has a 30-arc-minute diameter viewed from Earth; what range of sizes does it have when viewed from Mercury? When Mercury is 46 million km from the Sun, the Sun has a diameter of When Mercury is 70 million km from the Sun, the Sun has a diameter of arc-minutes. arc-minutes. b. At Mercury's orbital extremes, how many times stronger is the Sun's radiation on Mercury than on Earth? At 46 million km, the Sun's radiation is times stronger than on Earth. At 70 million km, the Sun's radiation is times stronger than on Earth.arrow_forwardIf Titan could be moved out to the orbit of Neptune would its atmosphere freeze into solid nitrogen? The formula to estimate the blackbody radiation temperature in Kelvin is: where α is the albedo at 0.3, L the luminosity is 1.5 Watts/meter2, σ , the Stefan Boltzmann constant is 5.67 X10-8 W/m2/K. What would be the temperature and would the atmosphere freeze out if the freezing point of N2 gas 63 K? answer choices 63 K, maybe 75 K, no 46 K, yes 103 K, noarrow_forward
- Suppose you were given a spectrum of a planet. The spectrum has a collection of absorption lines. Describe how you would use this simulation to identify what lines were present (or absent) in the spectrum, and therefore what atoms were present (or absent) on the planet.arrow_forwardKepler’s First Law: Elliptical Planetary Orbits: The solar system major planet in the most elliptical solar orbit is little Mercury, which is the closest planet to the Sun. At Perihelion, Mercury’s distance from the Sun (Rp) is 0.31 AU. At Aphelion, Mercury’s distance from the Sun (Ra) is 0.47 AU. The intensity of Sunlight (I) that a planet receives from the Sun is inversely proportional to the square of that planet’s distance from the Sun (R). in other words, I = Constant / R2. Calculate how much more intense the Sunlight received by Mercury is at perihelion (p) than at aphelion (a): Rp2 = Ra2 = Ip / Ia = Ra2 / Rp2 =arrow_forwardSuppose you send a probe to land on Mercury, and the probe transmits radio signals to Earth at a wavelength of 59.0000 cm. You listen for the probe when Mercury is moving away from Earth at its full orbital velocity of 48 km/s around the sun. What wavelength (in cm) would you have to tune your radio telescope to detect the signal? (Hint: Use the Doppler shift formula .) (Note: the speed of light if 3.0 x 10^5 km/s. Give your answer to at least four decimal places.) ______ cmarrow_forward
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