7) Assume that we have a distant Star-Planet system with no other planets and the Star is the sameas the Sun and the planet is the same as the Earth. (This is called an "Earth analog" or "Earthtwin".) The masses and orbits are the same, except you can assume a perfect circular orbit.a. Calculate the equation for the orbital velocity of a planet on a circular orbit. To do thisuse the equation for average speed: distance=rate * time. In a circular orbit, the speed(not the velocity!) is always the same, so can use a time that is one full orbital period (i.e.,1 year). What is the distance that a planet on a circular orbit traverses in this time?Calculate the speed of the Earth twin in meters/second.

in the given star- planet system planet's orbit is circular orbit distant star-planet system is…

Answered: 7) Assume that we have a distant…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And Gravitation

Section: Chapter Questions

Problem 47AP: (a) One of the moons of Jupiter, named Io, has an orbital radius of 4.22 108 m and a period of 1.77...

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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?
Astronomical observatrions of our Milky Way galaxy indicate that it has a mass of about 8.01011 solar masses. A star orbiting on the galaxy’s periphery is about 6.0104 light-years from its center. (a) What should the orbital period of that star be? (b) If its period is 6.0107 years instead, what is the mass of the galaxy? Such calculations are used to imply the existence of other matter, such as a very massive black hole at the center of the Milky Way.
What, on a sphere, is analogous to a two-dimensional Cartesian coordinate system?
An object of mass m is located on the surface of a spherical planet of mass M and radius R. The escape speed from the planet does not depend on which of the following? (a) M (b) m (c) the density of the planet (d) R (e) the acceleration due to gravity on that planet
According to the National Academy of Sciences, the Earths surface temperature has risen about 1F since 1900. There is evidence that this climate change may be due to human activity. The organizers of World Jump Day argue that if the Earth were in a slightly larger orbit, we could avoid global warming and climate change. They propose that we move the Earth into this new orbit by jumping. The idea is to get people in a particular time zone to jump together. The hope is to have 600 million people jump in a 24-hour period. Lets see if it will work. Consider the Earth and its inhabitants to make up the system. a. Estimate the number of people in your time zone. Assume they all decide to jump at the same time; estimate the total mass of the jumpers. b. What is the net external force on the Earthjumpers system? c. Assume the jumpers use high-tech Flybar pogo sticks (Fig. P8.32), which allow them to jump 6 ft. What is the displacement of the Earth as a result of their jump? d. What happens to the Earth when the jumpers land?
B)how long would it take for a ball dropped from a height of 15.0 meters to land on the surface of this planet? Answer in seconds. Use kinematic equation Y=y0+v0yt-1/2gt2
The radius of Mars is approximately 2,100miles and it's acceleration due to gravity is 0.38g, where g is the acceleration due to gravity in Earth. Determine the velocity of escape of a body if it startto move away from Mars at a distance of one-tenth ofit'sradius aboveit's surface. a. 1.689 mi/sec c. 0.986 mi/sec e. none of the choices b. 0.689 mi/sec d. 1.896 mi/sec
Assume there is a distant star-planet system with no other planets and the Star is the same as the Sun and the planet is the same as Earth (this is called and Earth analog or "Earth Twin"). The mass and orbits are the same, but assume this system has a perfectly circular orbit. a) calculate the equation for the orbital velocity of a planet on a circular orbit. What is the distance that a planet on a circular orbit travels in this time? Calculate the speed of the Earth twin in meters/second
how do i solve this problem
5. A rock is horizontally thrown from the top of a cliff a height, h, from the surface of Planet Unicorn with a speed, vo. If the top of the of the cliff is a distance, r from the center of the planet and the mass of Planet Unicorn is mp, determine the range of the rock, Ax, in terms of vo, h, r, G, and mp. Hint: Apply projectile motion and gravity defined by a planet's physical properties concepts.
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. What is a repeat ground-track orbit? b. Explain why repeat ground-track and Sun-synchronous orbits are typically used for Earth observation missions. = c. The constraint for a Sun-synchronous and repeat ground-track orbit is given by T 86, 400, where T is the orbital period in seconds, m the number of days and k the number of revolutions. Explain why this is, in fact, a constraint on the semi-major axis of the orbit. m

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