Pearson Etext Astronomy Today -- Access Card (9th Edition)
9th Edition
ISBN: 9780134873794
Author: Chaisson, Eric, MCMILLAN, Steve
Publisher: PEARSON
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An asteroid fragment has a density of 5.72 cm3 , what is this density in ft3 ? 1 lb = 454.5 g 1 in = 2.54 cm
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Problem 9.110
E Reading list
6 of 6
Astronomers estimate that a 2.0-km-wide asteroid
collides with the Earth once every million years.
The collision could pose a threat to life on Earth.
Constants | Periodic Table
Part A
Assume a spherical asteroid has a mass of 3500 kg for each cubic meter of volume and
moves toward the Earth at 15 km/s. How much destructive energy could be released when it
embeds itself in the Earth?
Express your answer using two significant figures.
να Α
?
Easteroid =
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Part B
For comparison, a nuclear bomb could release about 4.0x1016 J. How many such bombs
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Supposed you were an astronomer, and was able to speak wherein the world Leaders are gathered, would you recommend them an Asteroid Watch Project (a project that would monitor the motion of the asteroids near the earth)? Why or why not?
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- Find the speed of the first meteoroid when it strikes Earth. Express your answer in kilometers per second. femplates Symbols uado redo reset keyboard shortcuts help, vị = km/s Submit Request Answer Part B Find the speed of the second meteoroid at its closest approach to Earth. Express your answer in kilometers per second. Templates Symbols undo redo reset keyboard shortcuts help. v2 = km/s Submit Request Answer Part C Will the second meteoroid ever return to Earth's vicinity? o yes o no Submit Request Answerarrow_forwardThis is a challenging problem. Solve it on paper, writing out each step carefully. When doing calculations, do not round intermediate values. Note: If you have approached the problem in a principled way, do not abandon your approach if your numerical answer is not accepted; check your calculations! This problem is closely related to the spectacular impact of the comet Shoemaker-Levy with Jupiter in July 1994. (More information about the event can be found here.) A rock far outside a solar system similar to ours is initially moving very slowly relative to its sun, in the plane of the orbit of a large planet (about the size of Jupiter) around its sun. The rock falls toward the sun, but on its way to the sun it collides with the planet. The mass of the planet is 4 x 1027 kg, the mass of its sun is 3.2 x 1030 kg, the radius of the planet is 1.4 x 10® m, and the center-to-center distance from the planet to the sun is 9.2 x 1011 m. Part 1 (a) Calculate the rock's speed just before it…arrow_forwardHow do you solve for the aphelion? Particularly all I need to answer is letter b for now It takes 89.2 years for a comet to travel around its elliptical orbit. in which its perihelion is 0.67 AU. Calculate (a) the semi-major axis of the comet and (b) an estimate of the comet’s aphelion, both in astronomical units (AU).arrow_forward
- The asteroid Hygiea has a mass of 8.67 x 1019 kg and an average radius of about 216 km (2.16 x 102 km). What is its escape velocity (in m/s)? (Hints: Use the formula for escape velocity, 2GM ; remember to convert units to m, kg, and s.) r e m/s Could you jump off the asteroid? Yes No Need Help? Read It Submit Answerarrow_forwardRadiocarbon dating is the most common and important absolute dating technique in archaeology. The method has proven invaluable for providing calendar dates for a range of different materials and many different time periods. Radiocarbon dating, however, is not without its limitations and uncertainties, so it is important for archaeologists to be aware of a range of issues when using the technique. For the second part of this assignment, please answer the questions below. 6. List two kinds of archaeological materials can be dated using the radiocarbon method and two that cannot be dated with radiocarbon. 7. In one or two sentences, explain why radiocarbon ages need to be calibrated into calendrical ages? 8. A radiocarbon date on wood charcoal was obtained from Layer N in the stratigraphic profile above. The date has a radiocarbon age of 5500 BP ± 50 yrs and it calibrates to 4450-4260 cal. BC. Burial W in Layer E was also dated and has a radiocarbon age of 5000 BP ± 30, which…arrow_forwardVenus is observed when it is at Greatest Eastern Elongation, and the angle between Venus and the Sun on the sky is determined to be 46.3 degrees. A radar beam is transmitted towards Venus when it is at inferior conjunction, and the reflected signal is detected on Earth after 277 seconds. Determine the Sun-Venus distance and express your answers in metres. Show all of your working. [Expect to use no more than one A4 page for this subquestion.]arrow_forward
- Prompt: You are on the Sensor and Data Acquisition engineering team for the new NASA space rover program: the Unmanned Mobile Assessment Drone for Basic Reconnaissance and Observation. Your team is working with a very low budget, and have been given a hand-me-down drone which was repurposed from an old Mars mission. The drone has already landed successfully on Saturn. It’s first task was to travel 4.6 m to a rock and then use it’s built in drill to take a sample. Unfortunately, it appears that the drone stopped very short, only traveling 1.32 m instead of the 4.6 m. Everything about the ultrasonic distance sensor that the drone uses to move with seems to be operating correctly. When you requested details from the drone, it said that the time it took for the 40 kHz ultrasonic sound wave to travel to the rock and back was 0.0108 seconds. Why did the drone only travel 1.32 m, given the 0.0108s echo time?arrow_forwardPluto has been hard to measure from Earth because of the atmosphere. In 2007 Young and Buie measured Pluto as having a diameter of 2322 km. In 2015 the New Horizons probe reached pluto and measured it up close and we now know the actual diameter is 2372 km. What was the percent error of the 2007 measurement? Enter your answer as a percent with a negative value if the 2007 measurement was too small and a positive value if it was too large.arrow_forwardProcedure Table 11.1 presents Djup and Pday for the major Jovian satellites. First use these data and the equation above to calculate Jupiter’s mass in kilograms (kg). Enter your results in the table for each satellite. Next calculate the average Jupiter mass (Mjup, av) and enter the result in the table. Finally, calculate the percent difference (PD) using Mjup, av and the standard value for Jupiter’s mass (1.9 X 1027 kg). In the calculation of PD you can ignore 1027 because it will appear in both numerator and denominator. ________________________________________________________ Table 11.1 Calculated values for Jupiter’s Mass Satellite Djup Pday Mjup Io 2.95 1.77 Europa 4.69 3.55 Ganymede 7.50 7.15 Callisto 13.15 16.7 __________________________________________________________ Average Jupiter Mass = Percent Difference =arrow_forward
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