Question 3: You are an astronomer and are searching for planets in other stellar systems for which conditions on the surface of the planets are similar to the Earth. You have identified a candidate star, Tycho1601 that you know has same size to the Sun but 1.4 times the surface temperature of the Sun (our Sun). Around that star there are four planets rotating around it. You are about to invest valuable telescope time in studying the individual planets which one you start with? A) Planet TychoA located at a distance that is half the distance between our Earth and our

Question 3: You are an astronomer and are searching for planets in other stellar systems for which conditions on the surface of the planets are similar to the Earth. You have identified a candidate star, Tycho1601 that you know has same size to the Sun but 1.4 times the surface temperature of the Sun (our Sun). Around that star there are four planets rotating around it. You are about to invest valuable telescope time in studying the individual planets which one you start with? A) Planet TychoA located at a distance that is half the distance between our Earth and our

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter7: Gravity

Section: Chapter Questions

Problem 14PQ: Since 1995, hundreds of extrasolar planets have been discovered. There is the exciting possibility...

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In January 2006 astronomers reported the discovery of a planet, comparable in size to the earth, orbiting another star and having a mass about 5.5 times the earth’s mass. It is believed to consist of a mixture of rock and ice, similar to Neptune. If this planet has the same density as Neptune 11.76 g>cm32, what is its radius expressed (a) in kilometers and (b) as a multiple of earth’s radius?
Kepler’s third law says that the orbital period (in years) is proportional to the square root of the cube of the mean distance (in AU) from the Sun (Pa1.5) . For mean distances from 0.1 to 32 AU, calculate and plot a curve showing the expected Keplerian period. For each planet in our solar system, look up the mean distance from the Sun in AU and the orbital period in years and overplot these data on the theoretical Keplerian curve.
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In 2004, astronomers reported the discovery of a large Jupiter-sized planet orbiting very close to the star HD179949. The orbit was just 6.4x106 km (about 9 less than the orbit of Mercury) and the planet takes 3.1 days to make one circular orbit. The mass of the star is Answerx_______1030 kg. (Give the number before the exponent.)
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#1 Orbital DynamicsSuppose a satellite is in orbit about the Earth at a height of 2500 km above the surface of the Earth. If the radius of the Earth is 6370 km, what is the radius of the satellite’s orbit? Recall that r = RE + H. In #1, what is the period of the satellite’s orbit in hours? It may be helpful to remember that G = 6.67 × 10−11 kg−1m3s−2, while ME = 5.96 × 1024 kg. In addition recall that the formula for the orbital period is: ⃝ A. 2.31 hours ⃝ B. 3.59 hours ⃝ C. 5.12 hours ⃝ D. 8.27 hours ? r3T=2π GM (1)
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1- MODIS is an Earth Observation sensor onboard TERRA spacecraft flying in a near-polar circular orbit with an orbital period of 98.8 minutes. The width of the swath imaged by MODIS is 2330 km. A- How many orbits does TERRA trace in one day? B- Assuming that the Earth rotates around its polar axis at a rate of 0.2618 rd/hr and that the equatorial radius is 6378 km, do two consecutive swaths of MODIS overlap at the equator? (hint: the length of an arc = angle in rd * radius) C- The radius of the latitude circle at 35 deg is 5224.5 km. Do two consecutive swaths of MODIS overlap at latitude 35 deg? 2- An aerostationary orbit for Mars is equivalent to a geostationary orbit for Earth. It is designed to enable a satellite in that orbit to image always the same surface of Mars. Calculate the altitude of an aerostationary orbit assuming that Mars is spherical, that its sidereal rotational period is 1.02595676 Earth days, its equatorial radius is 3389.50 km and its mass is…
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