1. College Physics

    In 1986, the distance of closest approach of Halley’s comet to the Sun is 0.57AU. (1 AU is the mean Earth-Sun distance = 150 million kilometers.) The comet’s speed at closest approach is 54.97 km/s. (a) – By 1989, Halley’s comet had traveled to a

    asked by johnathan on November 4, 2012
  2. Physics

    Halley comet which passes around the sun every 76 years has an elliptical orbit. when closest to the sun it is at a distance of 8.823 x 10^10 m and moves with a speed of 54.6 km/s. The greatest distance between hally's comet and the sun ( aphelion ) is

    asked by Lonely on July 30, 2011
  3. Physics

    Halley's comet moves about the Sun in a highly elliptical orbit. At its closest approach, it is a distance of 8.90 1010 m from the Sun and has a speed of 54 km/s. When it is farthest from the Sun, the two are separated by 5.30 1012 m. Find the comet's

    asked by Alex on June 5, 2012
  4. physics

    Halley's comet moves about the sun in an elliptical orbit with its closest approach to the SUn being .59AU and its greatest distance being 35AU (1AU=Earth-sun distance) if the comet's speed at closest approach is 54km/s what is its speed when it is

    asked by cyndi on January 29, 2007
  5. Physics

    Halley’s comet orbits the Sun with a period of 76.2 years. a) Find the semi-major axis of the orbit of Halley’s comet in astronomical units (1 AU is equal to the semi-major axis of the Earth’s orbit Physics - drwls, Thursday, May 5, 2011 at 8:51am

    asked by Reese on May 5, 2011
  6. Physics

    Halley’s comet orbits the Sun with a period of 76.2 years. a) Find the semi-major axis of the orbit of Halley’s comet in astronomical units (1 AU is equal to the semi-major axis of the Earth’s orbit Physics - drwls, Thursday, May 5, 2011 at 8:51am

    asked by Reese on May 5, 2011
  7. AP Physics Halley's Comet

    Halley's comet orbits the sun roughly once every 76 years. It comes very close to the surface of the Sun on its closest approach. Estimate the greatest distance of the comet from the sun. Is it still in the Solar System? What planet's orbit is nearest when

    asked by Henry on October 2, 2009
  8. physics

    The orbit of Halley's Comet around the Sun is a long thin ellipse. At its aphelion (point farthest from the Sun), the comet is 5.1 1012 m from the Sun and moves with a speed of 12.0 km/s. What is the comet's speed at its perihelion (closest approach to the

    asked by Meisha on March 29, 2011
  9. Physics

    Halley's Comet orbits the sun about every 75 years due to the gravitational force the sun provides. Compare the gravitational force between Halley's Comet and the sun when the Comet is at aphelion (its greatest distance from the sun) and d is about

    asked by Dontworryaboutit on February 25, 2016
  10. Physics

    Halley’s comet orbits the Sun with a period of 76.2 years. a) Find the semi-major axis of the orbit of Halley’s comet in astronomical units (1 AU is equal to the semi-major axis of the Earth’s orbit).

    asked by Reese on May 4, 2011
  11. Physics

    Halley’s comet orbits the Sun with a period of 76.2 years. a) Find the semi-major axis of the orbit of Halley’s comet in astronomical units (1 AU is equal to the semi-major axis of the Earth’s orbit

    asked by Reese on May 5, 2011
  12. Pre-Calculus

    Venus orbits the sun in an approximately circular path. Venus is about 67 million miles from the sun. A comet is located 80 million miles north and 73 million miles west of the sun. The comet follows a straight-line path and exits Venus's orbit at the east

    asked by Anonymous on October 4, 2015
  13. physics

    the period of a comet is 100 years. At ists closest approach(perihelion), it is 0.37 AU from the sun. What is the semi-major axis of the comet's orbit? How for does it get from the sun(what is its aphelion distance)?

    asked by jason on October 25, 2008
  14. Accelerated algebra

    Comet C has an elliptical orbit of eccentricity 0.9638 with the sun at one focus. The greatest distance of the comet from the sun is 2940 million miles. Find the least distance between the comet C and the sun.

    asked by Ben on March 1, 2016
  15. Astronomy

    1. Sun-grazing comet ISON disintegrated on November, 2013. Observation of the comet suggested an elliptical orbit with period 581,480 years. What would this predict for the distance from the Sun at the orbit’s aphelion, the farthest point from the

    asked by keitanako on December 9, 2013
  16. Physic

    A particular comet has an elliptical orbit. When closest to the Sun (perihelion) it is at a distance of 8.823 1010 m and moves with a speed of 54.6 km/s. The greatest distance between this comet and the Sun (aphelion) is 6.067 1012 m. a. Calculate its

    asked by Mary on March 28, 2010
  17. science

    A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 4.8 x10^10 m (inside the orbit of Mercury), at which point its speed is 9.1 x10^4 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto.

    asked by rachel on July 8, 2014
  18. MATH

    Halley's comet appears in the sky approximately once every 77 years. If the comet was seen in by Astronomer Edmund Halley in 1531. How many times has the comet been spotted since?

    asked by Kate on July 8, 2011
  19. Physics

    Halleys Comet. Rmin =8.9 x 10^10 m Period of orbit = 2.4 x 10^9 sec 1)What is value of K for Halley's comet? 2)Whats the average radius of Halleys comet orbit? 3)What is value of the aphelion(Rmax) for halley's comet.(Rmin is perihelion. Recall Rave=

    asked by johnny on November 10, 2007
  20. Physics

    Halleys Comet. Rmin =8.9 x 10^10 m Period of orbit = 2.4 x 10^9 sec 1)What is value of K for Halley's comet? 2)Whats the average radius of Halleys comet orbit? 3)What is value of the aphelion(Rmax) for halley's comet.(Rmin is perihelion. Recall Rave=

    asked by johnny on November 10, 2007
  21. ALG. ASAP

    The orbit of comet Hale-Bopp is an ellipse as shown below. The units are astronomical units (abbreviated AU). 1 AU ≈ 92,960,000 mi. (a) Find an equation in standard form of the orbit of the comet. (Enter your answer in terms of AU.) (b) The distance from

    asked by K- ASAP on May 7, 2014
  22. physics

    At perihelion on Feb. 9, 1986, Halley’s comet was 8.79 × 107 km from the sun and was moving at a speed of 54.6 km s−1 relative to the sun. Calculate its speed (a) when the comet was 1.16 × 108 km from the sun, and (b) at its next aphelion in the year

    asked by swapnali on March 15, 2012
  23. Physics

    1.Halley's comet moves about the sun in an elliptical orbit with its closest approach to the sun being 0.59 A.U. and its furthest distance being 35 A.U. [1 Astronomical Unit (A.U.) is the Earth-Sun distance.] If the comet's speed at closest approach is 54

    asked by Brianna on July 11, 2010
  24. PHYSICS!!

    Comet Halley returns every 74 years. Find the average distance of the comet from the sun. How do i do this??

    asked by Nic on January 16, 2008
  25. Physics

    A comet orbits the Sun with a period of 72.0 yr. (a) Find the semimajor axis of the orbit of the comet in astronomical units (1 AU is equal to the semimajor axis of the Earth's orbit). (b) If the comet is 0.60 AU from the Sun at perihelion, what is its

    asked by James on June 30, 2012
  26. physics

    A comet orbits the Sun with a period of 72.8 yr. (a) Find the semimajor axis of the orbit of the comet in astronomical units (1 AU is equal to the semimajor axis of the Earth's orbit). (b) If the comet is 0.55 AU from the Sun at perihelion, what is its

    asked by Tim on June 28, 2012
  27. Physics

    A comet orbits the Sun with a period of 72.0 yr. (a) Find the semimajor axis of the orbit of the comet in astronomical units (1 AU is equal to the semimajor axis of the Earth's orbit). (b) If the comet is 0.60 AU from the Sun at perihelion, what is its

    asked by James on July 18, 2012
  28. Physics

    The appromiate mass of a comet X has been memasured. When comet X orbits the Sun 5000 years later it only has half it's previous mass. Approximately how many orbits of the Sun has the comet completed and what is the period of the comets orbit?

    asked by Kim on May 17, 2012
  29. Physics

    Suppose there's a collison way out in the Oort cloud, say 30,000 AU away from the Sun. This collison causes one of the comets to alter its orbit and head almost directly at the Sun, such that the comet just skims the surface of the Sun and heads back out

    asked by Stefanie on March 28, 2012
  30. physics

    A comet orbits the Sun with a period of 71.8 yr. (a) Find the semimajor axis of the orbit of the comet in astronomical units (1 AU is equal to the semimajor axis of the Earth's orbit). (b) If the comet is 0.50 AU from the Sun at perihelion, what is its

    asked by lanre on July 5, 2012
  31. physical

    An asteroid in an elliptical orbit about the sun travels at 3.9 106 m/s at perihelion (the point of closest approach) at a distance of 3.7 108 km from the sun. How fast is it traveling at aphelion (the most distant point), which is 8.6 108 km from the sun?

    asked by ahmed on January 24, 2013
  32. science

    An asteroid in an elliptical orbit about the sun travels at 2.0 106 m/s at perihelion (the point of closest approach) at a distance of 3.8 108 km from the sun. How fast is it traveling at aphelion (the most distant point), which is 8.3 108 km from the sun?

    asked by Anonymous on September 12, 2012
  33. MATH ANALYSIS

    How do i do this? According to Kepler's Laws, planets have elliptical orbits, with the sun at one of the foci. The farthest Pluto gets from the sun is 7.4 billion kilometers. The closest it gets to the sun is 4.4 billion kilometers. Find the equation of

    asked by anonymous on December 7, 2009
  34. math

    if the speed of a comet at perihelion (the closest orbital point to the sun) is 98000 mi/h. How far will the comet travel in 30 sec?

    asked by angel on August 9, 2012
  35. astronomy

    The orbit of the comet Encke has a perihelion distance of 0.331 AU and an eccentricity of 0.850. Suppose that the arrival of the comet at its perihelion distance happens to occur at a point directly in line between the Sun and the Earth. Roughly how many

    asked by ev on October 21, 2015
  36. science

    In astronomy the term perihelion refers to the point in the orbit of an asteroid, comet, or planet when it is closest to the sun. Aphelion refers to the point when the object is farthest away from the sun. research facts about the dwarf planet Ceres.

    asked by Anonymous on June 7, 2018
  37. Crystal

    So this is the problem: A comet is in an elliptical orbit around our Sun. At its point of closest approach, it is moving at 6.3x10^4 m/s and is 4.2x10^10m away from the sun. When it is at the farthest distance, 7.5x10^12m away, how fast is it going? This

    asked by Physics on November 4, 2015
  38. Physics

    So this is the problem: A comet is in an elliptical orbit around our Sun. At its point of closest approach, it is moving at 6.3x10^4 m/s and is 4.2x10^10m away from the sun. When it is at the farthest distance, 7.5x10^12m away, how fast is it going? This

    asked by Crystal on November 4, 2015
  39. Physics

    Which object produces energy in the form of light? A Venus B the sun C the moon*** D Halley’s comet I think it is C, but I'm not sure!

    asked by A girl on November 2, 2017
  40. Astronomy

    Choose one answer for each question How old is the universe? 6,000 years old 380,000 years old 13.8 billion years old 13.8 million years old A parsec is: Longer than a light year The distance between the Earth and the Sun Approximately 3x10^24 cm None of

    asked by qwerty on April 29, 2014
  41. science

    what determine's the direction that Halley's comet points? The tail points away from the sun.

    asked by ali on March 6, 2007
  42. college algebra

    Kepler’s third law. According to Kepler’s third law of planetary motion, the ratio t^2/r^3 has the same value for every planet in our solar system. R is the average radius of the orbit of the planet measured in astronomical units (AU), and T is the

    asked by Rick on October 9, 2010
  43. Math

    A comet passed by earth in the year 1835 It passes by every 60 years Based on this information in which of the following years can be the comet be expected to Pass by earth A : 2035 B: 2060 C: 2075 D: 2080

    asked by Leslie on April 7, 2012
  44. Physics

    Suppose that a comet that was seen in 545 A.D. by Chinese astronomers was spotted again in year 1937. Assume the time between observations is the period of the comet and take its eccentricity as 0.11. What are (a) the semimajor axis of the comet's orbit

    asked by Austin on November 12, 2017
  45. Physics/Moons Orbit

    The Moon describes an elliptical path around the Earth and a complete orbit is 29d 12h 44m 3s Approximately! At its closest during this orbit it is termed Perigee and at its farthest Apogee. However there must be 2 other points opposite Perigee & Apogee

    asked by Mike on October 13, 2007
  46. Science

    Have I matched the right Scientists with these famous sayings: Scientists: Ptolemy, Kepler, Copernicus, Newton, Galileo, Brahe & Hubble. 1)"I've finally worked out an explanation as to why planets orbit the sun and moons orbit planets. It is gravity that

    asked by Tyler on September 4, 2008
  47. Physics

    Our sun rotates in a circular orbit about the center of the Milky Way galaxy. The radius of the orbit is 2.2 1020 m, and the angular speed of the sun is 1.2 10-15 rad/s. (a) What is the tangential speed of the sun? m/s (b) How long (in years) does it take

    asked by John on March 6, 2008
  48. Physics please help ASAP!

    If you know the mass of a star and a planet’s radius and speed at perihelion (closest approach to the star), then using conservation of energy and angular momentum you can solve for the radius and speed of that planet at aphelion (farthest point from the

    asked by Bobby on March 31, 2014
  49. ALG/TRIG

    Lost is an understatement..please help me understand this. Orbits and Distance Johannes Kepler (1571–1630)discovered a relationship between a planet’s distance D from the sun and the time T it takes to orbit the sun. This formula is , where T is in

    asked by Lost on March 6, 2012
  50. Science-Help

    What happens as a comet approaches and moves away from the sun? As a comet approaches towards the sun it becomes warm. Then as it moves away from the sun, it forms a glowing tail and extends over 100 million km. Please tell me if this is correct, thanks

    asked by Sara on February 15, 2010
  51. Science

    What happens as a comet approaches and moves away from the sun? As a comet approaches towards the sun it becomes warm. Then as it moves away from the sun, it forms a glowing tail and extends over 100 million km. Please tell me if this is correct, thanks

    asked by Sara on February 15, 2010
  52. Science

    What happens as a comet approaches and moves away from the sun? As a comet approaches towards the sun it becomes warm. Then as it moves away from the sun, it forms a glowing tail and extends over 100 million km. Please tell me if this is correct, thanks

    asked by Sara on February 15, 2010
  53. Physics

    an earth satellite has an elliptical orbit with an eccentricity value, e=0.40 and on orbital period of 10 hours and 54.0 minutes. Find the height above the surface at its closest approach point.

    asked by Ana on May 14, 2017
  54. physics

    The planetMars requires 2.35 years to orbit the sun, which has a mass of 2 × 1030 kg, in an almost circular trajectory. Find the radius of the orbit of Mars as it circles the sun. The gravitational constant is 6.672 × 10−11 N · m2/kg2 . Answer in

    asked by Alyssa on November 8, 2012
  55. physics

    What is responsible for earth's elliptical orbit around the sun? a. the gravitational pull of the sun b. magnetic forces both attracting and repelling other planetary bodies c. momentum caused by the earth's rotation d. balance between centripetal and

    asked by sadaf on February 23, 2010
  56. Astronomy

    If a comet was at aphelion (furthest distance from the sun) in 1944 and will be at perihelion (closest point to the sun) in 2050, at a distance of 0.5 AU, what would it's aphelion distance be

    asked by Rico on March 31, 2013
  57. Astronomy

    If a comet was at aphelion (furthest distance from the sun) in 1944 and will be at perihelion (closest point to the sun) in 2050, at a distance of 0.5 AU, what would it's aphelion distance be

    asked by Rico on March 31, 2013
  58. physics help please

    The Sun orbits the Milky Way galaxy once each 2.60 * 10^8 years, with a roughly circular orbit averaging 3 * 10^4 light years in radius. Calculate the average speed of the sun in m/s. Whew! Should I convert the 3*10^4 light years to meters, and then divide

    asked by anonymous on January 5, 2018
  59. astronomy

    A possible trajectory for sending a spacecraft to Mars is an elliptical orbit with Earth at its perihelion and Mars at its aphelion. The craft would be launched out of low-Earth orbit by a quick burst of rockets into solar orbit, and would then "coast''

    asked by johan on December 3, 2015
  60. Astronomy

    A possible trajectory for sending a spacecraft to Mars is an elliptical orbit with Earth at its perihelion and Mars at its aphelion. The craft would be launched out of low-Earth orbit by a quick burst of rockets into solar orbit, and would then "coast''

    asked by keitanako on December 9, 2013
  61. physics

    The sun has a mass of 1.99 × 1030 kg and is moving in a circular orbit about the center of our galaxy, the Milky Way. The radius of the orbit is 2.3 × 104 light-years (1 light-year = 9.5 × 1015 m), and the angular speed of the sun is 1.1 × 10-15 rad/s.

    asked by Jennifer on March 9, 2015
  62. math

    A model of a planet shows a satellite moving in an elliptical orbit about the planet. The closest distance from the centre of the satellite to the centre of the planet in the model is 3 m and the longest distance is 8m. a) Determine a possible equation for

    asked by Lucy on December 6, 2008
  63. Astronomy

    The average distance between the Earth and the Sun is called the astronomical unit (AU), which is about 150 million km (1.5 x 108 km). Jupiter is 780 million km from the sun. a) How far is Jupiter from the sun in astronomical units (AU)? b) Based on your

    asked by Rebecca on October 2, 2011
  64. physics

    An astronaut in a spacecraft looks out her window and observes a comet travel in the opposite direction at a relative speed of 237 m/s. The velocity of the spacecraft is 114 m/s directly away from the sun. What is the comet's velocity relative to the sun?

    asked by alex on June 15, 2015
  65. Physics

    I studied the equation of time recently and understand the Earths keplerian orbit is responsible for it. I understand the keplerian orbit described the Earths elliptical path and it was this alone that created the equation of time. I have just read that

    asked by Mike on October 15, 2007
  66. Physics

    Saturn makes one complete orbit of the Sun every 29.4 years. Calculate the radius of the orbit of Saturn. Hint: It is a very good approximation to assume this orbit is circular.

    asked by Sierra on June 29, 2012
  67. Physics

    Uranus makes one complete orbit of the Sun every 83.8 years. Calculate the radius of the orbit of Uranus. Hint: It is a very good approximation to assume this orbit is circular.

    asked by Sierra on June 25, 2012
  68. Physics

    A 7410-kg satellite has an elliptical orbit, as in the figure. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the

    asked by Donald on November 11, 2012
  69. Physics

    A 7410-kg satellite has an elliptical orbit, as in the figure. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the

    asked by Anonymous on November 12, 2012
  70. Physics

    Earth speeds along at 29.8 km/s in its orbit. Neptune's nearly circular orbit has a radius of 4.5 x 109 km, and the planet takes 164.8 years to make one trip around the Sun. Calculate the speed at which Neptune plods along in its orbit.

    asked by vv on September 17, 2013
  71. physics

    A spacecraft of mass is first brought into an orbit around the earth. The earth (together with the spacecraft) orbits the sun in a near circular orbit with radius ( is the mean distance between the earth and the sun; it is about 150 million km). (a) What

    asked by juanpro on November 22, 2013
  72. 4th grade math

    it takes jupiter 12 years to orbit the sun. how many days does it take jupiter to orbit the sun?. add 3 days for leap years

    asked by mythreyee on December 19, 2013
  73. Physics Urgent!!!!!

    Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

    asked by Eduardo on April 8, 2011
  74. Physics

    Use the following numbers for this question. MEarth 5.98e+24 kg MJupiter 1.9e+27 kg MSun 2e+30 kg Earth-Sun distance 150000000000 m Jupiter-Sun distance 778000000000 m rE 6380000 m rJ 69000000 m G = 6.67e-11 Nm2kg-2 the acceleration due to gravity at the

    asked by Anonymous on November 18, 2012
  75. Science, need help please!!

    Please help me with this science, thank you!! The sun is a mid-sized, main sequence star. What stage is next in the life cycle of the sun? A red giant B blackhole C white dwarf D neutron star ------------------------ Astronomers study many different kinds

    asked by Anonymous_potato on October 26, 2017
  76. Science

    1.)Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? A.)comet B.)asteroid C.)dwarf planet*** D.)planet Thanks for the help, Luna

    asked by Luna on October 23, 2018
  77. Science

    1.)Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) A.)comet B.)asteroid C.)dwarf planet D.)planet

    asked by #FreeGucci on February 16, 2016
  78. Physics (please help!!!!)

    Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

    asked by Eduardo on April 7, 2011
  79. Physics (please help!!!!)

    Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

    asked by Eduardo on April 7, 2011
  80. Physics (please help!!!!)

    Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

    asked by Eduardo on April 8, 2011
  81. Physics (please help!!!!)

    Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

    asked by Eduardo on April 7, 2011
  82. Physics Please help!!!

    Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

    asked by Eduardo on April 7, 2011
  83. Math

    All planets revolve around the sun in elliptical orbits. Uranus's furthest distance from the sun is approximately 3.005 times 10 to the ninth power km, and it's closest distance is approximately 2.749 times 10 to the ninth power km. Using this information,

    asked by Nadia on November 2, 2017
  84. physics

    I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars

    asked by sara on February 16, 2012
  85. physics

    I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars

    asked by sara on February 16, 2012
  86. Physics to drwl please help

    Only need help with part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth

    asked by sara on February 16, 2012
  87. physics

    Only need help with part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth

    asked by sara on February 17, 2012
  88. physics

    The mean distance of the planet Neptune from the Sun is 30.05 times the mean distance of Earth from the Sun. a.) Determine how many Earth-years it takes Neptune to orbit the Sun. b.) The mass of the Sun is 1.99 x 10^30 kg, and the closest distance of

    asked by Michelle on December 16, 2008
  89. Physics

    As a comet swings around the Sun, ice on the comet's surface vaporizes, releasing trapped dust particles and ions. The ions, because they are electrically charged, are forced by the electrically charged solar wind into a straight ion trail that points

    asked by Ri on November 24, 2010
  90. physics

    What is the linear speed of Saturn in its orbit about the sun? Give your answer in meters per second. (Consider the orbit of Saturn to be a circle of radius 1.43×1012 m and that it takes 29.50 yr for one orbit around the sun.)

    asked by Cole Lovick on September 22, 2014
  91. Physics

    the distance of a planet from its sun is 19000000 miles. if there are 29400000 seconds in one orbit, find the speed of the planet in its orbit about the sun. (assume a circular orbit)

    asked by S on January 18, 2016
  92. REALLY EASY

    Which of the following explanations correctly describes the reason we see the Sun rise and set each day? 1.The Sun rotates on its axis 2.The Earth revolves around the Sun in an elliptical path 3.The Earth rotates on its axis 4.The Sun revolves around the

    asked by Kristina on September 19, 2011
  93. physics--please help

    Only need help with part c--answer for part a is 2.94 radians and for b it is 777 days Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days.

    asked by sara on February 18, 2012
  94. Astronomu

    1. There is a common misconception about why the Earth is cold in the winter and warm in the summer. Some believe that this is because the Earth, in its elliptical orbit, is closer to the Sun in the summer and farther away in the winter. The argument is

    asked by Gerson on July 15, 2012
  95. Physics

    The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s^2? Details and assumptions You may assume

    asked by Jack on March 22, 2013
  96. science

    if i weigh 100 lbs on earth how much would i weigh on halley's comet?

    asked by makayla on April 30, 2010
  97. Astronomy

    "If the Sun were magically replaced with a giant rock that had precisely the same mass, Earth’s orbit would not change. Explain why not." I'm a little confused as to how to answer this. Is it because Earth doesn't orbit the exact center of the sun.

    asked by mc on January 23, 2016
  98. Science

    Why is an extra day added to February every four years? It is nice to have the calendar year the same as the Earth's orbit around the Sun. It takes 365 1/4 days to go around the sun...so, each four years, we add a day to correct the calendar. Thanks Bob!

    asked by joey v on March 25, 2007
  99. Science

    The sun's apparent motion across the sky from East to West daily is due to the A) rotation of the sun. B) rotation of the earth. C) orbit of the earth around the sun. D) orbit of the sun around the earth. I think the answer would be c.

    asked by Anonymous on March 30, 2017
  100. science

    Why does the Earth get more energy from the Sun compared to any other star? •The Sun is much closer to Earth. The next closest star is 4.2 light years away. **** • The Sun is much denser than other stars. That means it produces more energy. • The Sun

    asked by Taylor P. on October 15, 2017