21st Century Astronomy And Learning Astronomy By Doing Astronomy (fifth Edition)
5th Edition
ISBN: 9780393613360
Author: Laura Kay, Ana Larson, Stacy Palen, George Blumenthal
Publisher: W. W. Norton & Company
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Chapter 12, Problem 12QP
To determine
The comets, asteroids and meteorites are responsible for the presence of which component on the Earth.
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6. A water droplet falling in the atmosphere is spherical. Assume that as the droplet
passes through a cloud, it acquires mass at a rate proportional to kA where k is a
constant (k>0) and A is its cross-sectional area. Consider a droplet of initial radius ro
that enters a cloud with a velocity vo. Assume no resistive force and show (a) that the
radius increases linearly with the time, and (b) that if ro is negligibly small then the
speed increases linearly with the time within the cloud.
100 Mll, N
8.6.E (a) Calculate the equilibrium temperature of a
meteoroid of mass M, density p, and albedo A
in the vicinity of the Earth.
(b) Evaluate your result for a chondrite with M =
10°
g, p = 2.5 g cm-3, and albedo A = 0.05 and
for an achondrite with M = 10° g, p = 3 g cm
and albedo A = 0.3.
-3
3
Chapter 12 Solutions
21st Century Astronomy And Learning Astronomy By Doing Astronomy (fifth Edition)
Ch. 12.1 - Prob. 12.1CYUCh. 12.2 - Prob. 12.2CYUCh. 12.3 - Prob. 12.3CYUCh. 12.4 - Prob. 12.4CYUCh. 12.5 - Prob. 12.5CYUCh. 12 - Prob. 1QPCh. 12 - Prob. 2QPCh. 12 - Prob. 3QPCh. 12 - Prob. 4QPCh. 12 - Prob. 5QP
Ch. 12 - Prob. 6QPCh. 12 - Prob. 7QPCh. 12 - Prob. 8QPCh. 12 - Prob. 9QPCh. 12 - Prob. 10QPCh. 12 - Prob. 11QPCh. 12 - Prob. 12QPCh. 12 - Prob. 13QPCh. 12 - Prob. 14QPCh. 12 - Prob. 15QPCh. 12 - Prob. 16QPCh. 12 - Prob. 17QPCh. 12 - Prob. 18QPCh. 12 - Prob. 19QPCh. 12 - Prob. 20QPCh. 12 - Prob. 22QPCh. 12 - Prob. 23QPCh. 12 - Prob. 24QPCh. 12 - Prob. 25QPCh. 12 - Prob. 26QPCh. 12 - Prob. 27QPCh. 12 - Prob. 28QPCh. 12 - Prob. 29QPCh. 12 - Prob. 30QPCh. 12 - Prob. 31QPCh. 12 - Prob. 32QPCh. 12 - Prob. 33QPCh. 12 - Prob. 34QPCh. 12 - Prob. 35QPCh. 12 - Prob. 36QPCh. 12 - Prob. 37QPCh. 12 - Prob. 38QPCh. 12 - Prob. 39QPCh. 12 - Prob. 40QPCh. 12 - Prob. 41QPCh. 12 - Prob. 42QPCh. 12 - Prob. 43QPCh. 12 - Prob. 44QP
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- 22. Review. The average density of the planet Uranus is 1.27 x 10 kg/m. The ratio of the mass of Neptune to that of Uranus is 1.19. The ratio of the radius of Neptune to that of Uranus is 0.969. Find the average density of Neptune.arrow_forwardDue to tidal forces, a moon orbiting a planet will eventually a always keep the same side toward the planet b collide with the planet c break up into a number of fragments d develop a warmer climate as time goes on Jupiter's moon Io is very volcanically active, which means it has plate tectonics. a. true b. falsearrow_forwardNitrogen dioxide (NO2; molecular weight = 46 grams per mole [g/mol]) is contained in a 4.32-liter [L] vessel at 48 degree Celsius [°C] and 1,062 millimeters of mercury [mm Hg]. What is the mass of the Nitrogen dioxide in units of kilograms [kg] if the container is on the Moon? The Moon has a gravity of 1.6 meters per second squared [m/s?).arrow_forward
- When a projectile ( a rock from space, say) hits the surface of the Moon, which of the following do we NOT get? a. a crater b. an ejecta blanket c. secondary craters d. a rough hilly apron (or slope) of ejected material e. a gushing out lots of water that had been frozen inside the ground of the cold Moon, but it is briefly heated by the impactarrow_forwardChondrites are meteorites that have a. never been heated. b. been heated sufficiently to release volatiles they contained. c. been heated sufficiently to melt the chondrules. d. been completely melted. e. entered Earth’s atmosphere but will be destroyed before reaching the ground.arrow_forwardThis is what I have for step 1 and I'm pretty sure it's incorrect:1/-9.07 - 1/25.2 = -0.1499361229arrow_forward
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