a. Consider two planets orbiting a distant star. Planet A is further from the star. A is orbiting at a speed of 14625 m/s and has an orbital period of 12.45 years. What is the radius of A's orbit? Hint: remember to convert the period into seconds. 4.57*10^11 please enter a valid number Previous submissions: b. What is the mass of the star? 1.465*10^30 please enter a valid number Previous submissions: c. Planet B is closer in. B has larger velocity of 38500 m/s. What is the radius of B's orbit? m kg V incorrect incorrect

a. Consider two planets orbiting a distant star. Planet A is further from the star. A is orbiting at a speed of 14625 m/s and has an orbital period of 12.45 years. What is the radius of A's orbit? Hint: remember to convert the period into seconds. 4.5710^11 please enter a valid number Previous submissions: b. What is the mass of the star? 1.46510^30 please enter a valid number Previous submissions: c. Planet B is closer in. B has larger velocity of 38500 m/s. What is the radius of B's orbit? m kg V incorrect incorrect

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 15PQ: When Sedna was discovered in 2003, it was the most distant object known to orbit the Sun. Currently,...

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When Sedna was discovered in 2003, it was the most distant object known to orbit the Sun. Currently, it is moving toward the inner solar system. Its period is 10,500 years. Its perihelion distance is 75 AU. a. What is its semimajor axis in astronomical units? b. What is its aphelion distance?
Since 1995, hundreds of extrasolar planets have been discovered. There is the exciting possibility that there is life on one or more of these planets. To support life similar to that on the Earth, the planet must have liquid water. For an Earth-like planet orbiting a star like the Sun, this requirement means that the planet must be within a habitable zone of 0.9 AU to 1.4 AU from the star. The semimajor axis of an extrasolar planet is inferred from its period. What range in periods corresponds to the habitable zone for an Earth-like Planet orbiting a Sun-like star?
2. a. Consider two planets orbiting a distant star. Planet A is further from the star. A is orbiting at a speed of 14625 m/s and has an orbital period of 12.45 years. What is the radius of A's orbit? Hint: remember to convert the period into seconds. 4.57E11 Previous submissions: 457000000000 b. What is the mass of the star? 1.465E30 Previous submissions: 1.465e30 kg c. Planet B is closer in. B has a larger velocity of 38500 m/s. What is the radius of B's orbit? 6.598E10 Previous submissions: m 65980000000 m m kg m incorrect incorrect V incorrect
In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting very close to the star HD 179949 (hence the term "hot Jupiter"). The orbit was just 1/9 the distance of Mercury from our Sun, and it takes the planet only 3.09 days to make one orbit (assumed to be circular). a. What is the mass of the star? Express your answer in kilograms and as a multiple of our Sun's mass. b. How fast (in km/s) is this planet moving?
M. 00 F. %24 D. %23 HP TrueVision HD Pavi Se th Site w Technical A AN Careers Mail - boss Texas Work MOe Homework A College X C O 8 https://www.webassign.net/web/Student/Assignment-Responses/last?dep3D28680740 不。 CTN LIAL The International Space Station has a mass of 4.19 x 105 kg and orbits at a radius of 6.79 x 106 m from the center of Earth. Find the gravitational force exerted by Earth on the space station, the space station's gravitational potential energy, and the weight of a 71.4 kg astronaut living inside the station. HINT (a) the gravitational force (in N) exerted by Earth on the space station (Enter the magnitude.) N (b) the space station's gravitational potential energy (in J) (c) the weight (in N) of an 71.4 kg astronaut living inside the station Need Help? Watch It Read It MY NOTES ASK YOUR TEACHER PREVIOUS ANSWERS SERCP11 7.5.P.039. 8. [2/2 Points] DETAILS dp AMIN g ong Pva ladurial A 732006020610 ADVANCED AUD insert Oly f5 114 米 $ ヤ % 6 #3 9. %3D K. pa B. 目

32. At a given point above the surface of the Earth, the gravitational acceleration is equal to 5.4 m/s². Take the Earth mass M = 5.97x1024 kg and radius R = 6378 km. The altitude of this point, above the surface of the Earth, in km, is closest to: 33. What does the scale read? (Hint: t = rxF) a. 6900 b. 2800 C. 4200 d. 5700 e. 2200 a. b. C. d. a. b. C. d. e. C. 34. A solid cylinder of 5 cm radius is positioned on a frictionless plane inclined at 30 degrees above horizontal. A force F is exerted by a string wrapped around the spool. When F has a certain critical value the center of mass of spool does not move. When this is the case, what is the angular acceleration of the spool? (Hint: t = la) 0001 1910 a. b. e. 500 N 1000 N 2000 N 4000 N 392 rad/s² 340 rad/s² 260 rad/s² 196 rad/s² 98 rad/s² Scale 30" Massless rod 1000 N 4.05 138 35. Two buckets spin around in a horizontal circle on frictionless bearings. Suddenly, it starts to rain. As result, The buckets speed up because the…
a. Find the acceleration due to gravity at the surface of a neutron star of mass 1.5 solar masses and having a radius of R = 10.0 km. b. Find the weight of a 0.120-kg baseball on the surface of this star. c. Assume the equation U = mgh applies, and calculate the energy that a 70.0-kg person would expend climbing a 1.00-cm-tall mountain on the neutron star. d. Find the speed needed by a small satellite to maintain a circular orbit with a radius of 2R around the neutron star.
A number of gas giant planets orbiting other stars at distances less than 1 A.U. have been discovered. Because of their proximity to their parent stars, and their compositional similarity to Jupiter, they have been labeled “Hot Jupiters”. The orbital radius of one of these planets is 0.06 A.U. with average orbital speed 600 km/sec. What is the length of this planet’s year in Earth (solar) days? Estimate the mass, M, of its parent star in terms of the mass of the sun (M) using Newton’s first form of Kepler’s 3rd Law. Calculate the star’s luminosity, L, in terms of the luminosity of the sun (L☉), Note: (LL=MM4where L ~ 4 × 1026 W ). The radius of this planet is 1.5 times the radius of Jupiter. Assuming its equilibrium temperature is the temperature at which the planet radiates as much energy as it receives from its star, estimate the temperature of the planet. The value of the planet’s albedo is 0.8. (NOTE: The intensity of the star’s radiant power at a distance d from the star is…
Astronomical observations of our milky way galaxy indicate that it has a mass of about 8x1011 solar masses. A star orbiting near the galaxy's periphery is 5.6x104 light years from its center. a.) What should be the orbital period (in years) of that star be? b.) If its period is 6.4x107 years instead, what is the mass (in solar masses) of the galaxy? Such calculations are used to imply the existence of "dark matter" in the universe and have indicated, for example, the existence of very massive black holes at the center of some galaxies.
the black holė, assun around it. A [ans: 4.5 × 1039 kg] Figure 5 2. Mars orbits the Sun in a nearly circular orbit of radius 2.28 × 10" m. The mass of Mars is 6.42 × 1023 kg. Mars experiences a gravitational force from the Sun of magnitude 1.63 × 1021 N. Calculate the speed of Mars and the period of revolution for Mars in terms of Earth years. A [ans: 2.41 × 10ª m/s; 1.90 Earth years] 3. Calculate the speed of a satellite i 6774656902-5 MUCCON N) 16 x10 DVANCED D.A.L. EL-531XT OFF OME D/NO CA nd F MODE STAT VAR INS ALPHA SET UP DEL RESET O pNOT sin AND cos OR tan1XOR DRG XNOR sin dR COS tan DRG EX log in. +DEG M. abc dx D'M'S RCL STO (x,y) DATA CD. -re -xy oy WOM a y q ( 8 6 ) ncr nPr XS +HEX C I NI8 + 5 4. 9 A PEN
The Small Magellanic Cloud is a dwarf galay orbiting the Milky Way at a distance of 50 kiloparsecs from its center, on a circular orbit. It is moving at a velocity. rolative to the Milky Way, of 207 km/s. What is the mass of the Milky Way, in units of solar masses, inside the Cloud's orbit? B !! 245 If'a quasar emits 10^(10) times the Sun's luminosity, converting 10% of the mass of the material it eats into radiation, how many stars (ach of the Sun's mans) must it consume per year?
Two planets orbit a star in circular orbits, as shown. The mass of the star is 8 * 101 kg. The mass of planet 1 is 8 * 10ª kg. The orbital radius of planet 2 is 2 x 1o1ºm. When the planets are in the configuration shown F=(-9.34 * 1024 i + 1.28 * 1027 j) N. X- a. What is the orbital radius of planet 1? b. What is the mass of planet 2? c. What is the orbital period of planet 2?