1. Physics Calculation

    The weight of an apple near the surface of the earth is 1N. What is the weight of Earth in the gravitational field of the apple?

    asked by George on May 14, 2011
  2. Physical science

    When you drop a 0.36 kg apple, Earth exerts a force on it that accelerates it at 9.8 m/s^2 toward the earth's surface. According to Newton's third law, the apple must exert an equal but opposite force on Earth. If the mass of the earth 5.98x10^24 kg, what

    asked by Jenna on February 17, 2008
  3. Physics

    The earth pulls on an apple with 0.5 N of force. Which statement is the most accurate about this situation? The Apple is in static equilibrium. The apple doesn’t pull on the earth as is evidenced by the fact that it is only the Apple that moves.(my

    asked by BlessedGalPal on October 8, 2018
  4. physics

    As you walked on the moon, the earth’s gravity would still pull on you weakly and you would still have an earth weight. How large would that earth weight be, compared to your earth weight on the earth’s surface? (Note: The earth’s radius is 6378 km

    asked by olga on March 31, 2011
  5. Physics

    Suppose a new extrasolar planet is discovered. Its mass is double the mass of the Earth, but it has the same density and spherical shape as the Earth. How would the weight of an object at the new planet's surface differ from its weight on Earth? (Let Wnew

    asked by James on June 26, 2012
  6. physics

    CRITICAL THINKING: The term ”weight” in physics has the following very specific meaning: “The weight of an object is the name given to a particular force: the gravitational force exerted by the earth on the object, giving it an acceleration of 9.8

    asked by Anonymous on January 29, 2015
  7. physics

    CRITICAL THINKING: The term ”weight” in physics has the following very specific meaning: “The weight of an object is the name given to a particular force: the gravitational force exerted by the earth on the object, giving it an acceleration of 9.8

    asked by Anonymous on January 29, 2015
  8. physics

    How high does a rocket have to go above the Earth’s surface so that its weight is reduced to 33.7 % of its weight at the Earth’s surface? The radius of the Earth is 6380 km and the universal gravitational constant is 6.67 × 10 −11 N · m 2 /kg 2 .

    asked by Anonymous on December 13, 2012
  9. Physics

    When you drop a 0.27-kg apple, Earth exerts a force on it that accelerates it at 9.8 m/s2 toward Earth's surface. According to Newton's third law, the apple must exert an equal and opposite reaction force on Earth. If the mass of Earth is 5.98 1024 kg,

    asked by Anonymous on December 2, 2015
  10. Physics

    Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. Hint: At three earth radii from the surface of the Earth, the gravity force (weight) of the spacecraft will be reduced to (1/4)^2 =

    asked by Scotty on January 7, 2007
  11. algebra

    the weight of a body above the surface of earth varies inversely with the square of the distance from the center of the earth. if maria weighs 125 pounds when she is on the surface of the earth(3960 miles from the center),determine maria weight if she is

    asked by shae on October 22, 2013
  12. algebra

    the weight of a body above the surface of earth varies inversely with the square of the distance from the center of the earth. if maria weighs 125 pounds when she is on the surface of the earth(3960 miles from the center),determine maria weight if she is

    asked by shae on October 22, 2013
  13. maths

    The Weight of an object varies inversely as the square of its distance from the centre of the earth.the weight of a spacecraft is observed to be only a quater of its weight on earth.How far is the spacecraft from the surface of the earth? [take radius of

    asked by ashong benjamin on July 28, 2015
  14. maths

    The weight of an object varies inversely as the square of its distance from the centre of the earth. The weight of an aeroplane is observed to be only 4/9 of its weight on earth. How far is the aeroplane from the surface of the earth. Take the radius of

    asked by Agbozo on May 2, 2019
  15. Algebra II

    The force of attraction between the earth and some object is called the weight of that object. The law of gravitation states, then, that the weight of an object is inversely proportional to the square of its distance from the center of the earth. If a

    asked by Arielle on November 21, 2011
  16. Algebra II

    The force of attraction between the earth and some object is called the weight of that object. The law of gravitation states, then, that the weight of an object is inversely proportional to the square of its distance from the center of the earth. If a

    asked by Arielle Guidry on November 16, 2011
  17. science. -_-

    Okk so im not asking for answers, i just need somone to expplain this homework to me! I don't get it what so ever. So the homework tittle is Weight in space. So it has a whole discripition in wjich i will write dpwn for you. The paper says: Gravity is an

    asked by Leslie:) on September 23, 2013
  18. calculus

    the weight of a person on or above the surface of the earth varies inversely as the square of the distance the person is from the center of the earth. if a person weighs 180 pounds on the surface of the earth and the radius of the earth is 3900 miles, what

    asked by Anonymous on June 23, 2014
  19. phy.

    check my understanding please. Larry weighs 300 N at the surface of the earth. what is the weight of the earth in the gravitational field of Larry? -would it still be 300 N an astronaugt lands on a planet that has twice the mass as earth and twice the

    asked by Julie on October 16, 2007
  20. physics

    At what altitude above the Earth's surface would your weight be three-fifths of what it is at the Earth's surface? Assume re = 6.371 10^3 km. If weight decreases as the inverse square of distance, then 3/5= (re/r)^2 where r is the distance from the center

    asked by Liz on October 16, 2006
  21. MATH

    Can someone please help me with the following question. 1) The weight of an object above Earth can be modeled by a function of the form w(h)=(r/r+h)^2*"w , where r is the radius of Earth 0" (approximately 3950 miles)," h" is the distance above Earth's

    asked by Sam on March 24, 2011
  22. Pre-Calc (Please my class starts in an hour!! :)

    Can someone please help me with the following question. 1) The weight of an object above Earth can be modeled by a function of the form w(h)=(r/r+h)^2*"w , where r is the radius of Earth 0" (approximately 3950 miles)," h" is the distance above Earth's

    asked by Sam on March 24, 2011
  23. Pre-Calc H.W. Help :)

    Can someone please help me with the following question. 1) The weight of an object above Earth can be modeled by a function of the form w(h)=(r/r+h)^2*"w , where r is the radius of Earth 0" (approximately 3950 miles)," h" is the distance above Earth's

    asked by Sam on March 24, 2011
  24. Pre-Calculus

    Can someone please help me with the following question. 1) The weight of an object above Earth can be modeled by a function of the form w(h)=(r/r+h)^2*"w , where r is the radius of Earth 0" (approximately 3950 miles)," h" is the distance above Earth's

    asked by Sam on March 24, 2011
  25. physics

    Joe has a weight of 850 N (about 193 lb) when he is standing on the surface of the Earth. What would his weight (the gravitational force due to the Earth) be if he tripled his distance from the center of the Earth by flying in a spacecraft?

    asked by Mina on February 22, 2012
  26. physic

    A satellite used in a cellular telephone network has a mass of 2010kg and is in a circular orbit at a height of 770km above the surface of the earthTake the gravitational constant to be G = 6.67×10−11N⋅m2/kg2 , the mass of the earth to be me =

    asked by cuzer on July 11, 2013
  27. earth

    A particle weighs 120 N on the surface of the earth. At what height above the earth's surface will its weight be 30 N? Radius of the earth = 6,400 km.

    asked by Anonymous on May 31, 2012
  28. Physics

    A 360-kg satellite is in orbit around the Earth 10000 km above the Earth's surface. (a) What is the weight of the satellite when in orbit? [Answer is in N] (b) What was its weight when it was on the Earth's surface, before being launched? [Answer is in N]

    asked by MB on February 14, 2011
  29. Physics

    The acceleration of gravity at the surface of the moon is approximately 1/6 that at the surface of the Earth (9.8m/s). What is the weight of an astronaut standing on the moon whose weight on Earth is 180lbs?

    asked by Ashley on March 8, 2012
  30. physics

    A satellite has a mass of 100 kg and is in an orbit at 2.00*10^6 m above the surface of the Earth (a) what is the potential enegry of the satellite at this location?(b) what is the magnitude of the gavitational forece on the satellite? a) Since the weight

    asked by becky on January 8, 2007
  31. Math

    The weight W of an object varies inversely as the square of the distance d from the center of the earth. At sea level (3978 mi from the center of the earth), an astronaut weights is 110lb. Find her weight when she is 459 mi above the surface of the earth

    asked by Miranda on May 12, 2009
  32. Physics

    Weight of an object on the surface is 100N . What will we it's weight a planet whose mass 10times that of earth and radius is 3 times as that of earth??

    asked by Rani solanki on October 23, 2016
  33. algebra

    You must submit your response as a file. An object’s weight depends on its height above the surface of the earth. If a man weighs 190 pounds on the surface of the earth, then the man's weight in pounds (W) x miles above the surface is approximated by the

    asked by darlene on November 30, 2014
  34. Science

    The weight of a body on the surface of the earth is 392N .What will be the weight of this body on a planet whose mass is double that of the earth and radius is four times that of the earth

    asked by Saranah on September 14, 2016
  35. Physics

    Al the astronaut has a weight of 1600 N when he is standing on the surface of earth. What is the force of gravity action on him when he is in space station orbiting earth at a distance of four earth radii from the center of the earth?

    asked by Beth on October 14, 2016
  36. physics

    A 70 kg man weighs 686 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 14% of his body weight? i don't even know where to start with this question... i need help!

    asked by lissa on December 19, 2010
  37. Physics [No Math]

    When calculating weights away from Earth's surface, for example: At 6.38x10^3 km away from Earth's surface a spacecrafts weight is d=rE+rE Then F=(1/4)(SpaceCraftWeight) Why is the distance 2rE?

    asked by Mikey on December 2, 2012
  38. Physics

    A man has a mass of 80kg on the Earth's surface. Part A How far above the surface of the Earth would he have to go to "lose" 13% of his body weight?

    asked by Joe on September 26, 2013
  39. Algebra

    How do I calculate finding the weight of someone, on the earth's surface with a radius of 3900 miles, and their weight 625ft above the surface?

    asked by Mac on July 16, 2011
  40. physics help 3!! **

    Based on the following data about planet X (which orbits around the Sun): Planet X's distance from Sun = 3.6*1012 m Planet X's radius = 2*106 m Planet X's mass = 8.2*1022 kg a.) Find gx, the size of the acceleration due to gravity on the surface of Planet

    asked by kelsey on October 31, 2008
  41. physics

    An apple weighs 2 KG. The earth exerts a force of 20 Newtons on the apple. How fast does the apple fall ? ( 1 Newton = kg/m/s2)

    asked by steve o on February 15, 2012
  42. science

    If your weight is 60 N on earths surface how far should you go from the centre of earth so that your weight will be 300 N ?(radius of earth is 4.4*10^6 m)

    asked by monika on March 18, 2013
  43. physics

    Using Newton's Law of Universal Gravitation, compare the weight of a 68.1 kg astronaut on the surface of the earth to the gravitational pull of the Earth on the same astronaut when she is on the International Space Station. Constants: Average altitude of

    asked by Maria on November 16, 2011
  44. physics

    Using Newton's Law of Universal Gravitation, compare the weight of a 68.1 kg astronaut on the surface of the earth to the gravitational pull of the Earth on the same astronaut when she is on the International Space Station. Constants: Average altitude of

    asked by Maria on November 16, 2011
  45. Physics

    A man has a mass of 65kg on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 13% of his body weight?

    asked by Anonymous on November 24, 2013
  46. Physics

    how many kilometers would you have to go above the surface of the earth for your weight to decrease to half of what it was at the surface? I know that the mass of earth is 5.97 x 10^24 kg do i have to convert it to km ??

    asked by Sarah on June 15, 2009
  47. Physics

    A 85 kg man weighs 833 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 18% of his body weight?

    asked by Kelly on December 3, 2018
  48. physics

    A 80 kg man weighs 784 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 15% of his body weight?

    asked by alex on December 19, 2011
  49. phsics

    A 75 kg man weighs 735 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 15% of his body weight?

    asked by Anonymous on February 17, 2014
  50. physics

    A 70 kg man weighs 686 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 14% of his body weight?

    asked by melissa on December 19, 2010
  51. physics

    At what altitude above the Earth's surface would your weight be two-thirds of what it is at the Earth's surface? (Assume Re = 6.371 103 km.)

    asked by melad on February 17, 2011
  52. phy

    (Q1)At what altitude above the earth's surface would the acceleration due to gravity be 4.9m/s-2?Assuming the mean radius of the earth is 64000000meters and the acceleration due to gravity 9.8m/s-2 on the surface of the earth

    asked by ikye on July 5, 2013
  53. Physics

    When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? -The distribution of mass in the earth is spherically symmetric. -The density of the earth is the same everywhere. -The earth's

    asked by arcos15 on January 25, 2013
  54. Physics

    When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? The distribution of mass in the earth is spherically symmetric. The density of the earth is the same everywhere. The earth's interior

    asked by arcos15 on January 25, 2013
  55. Physics HELLLPPPP

    When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? -The distribution of mass in the earth is spherically symmetric. -The density of the earth is the same everywhere. -The earth's

    asked by NATTT on January 25, 2013
  56. Physics 20

    Astronauts in orbit appear to be 'weightless'.Suppose an astronaut with a mass of 154 KG including gear is in orbit in the space shuttle, a distance of 222 km above the Earth;s surface.Taking the Earth's radius to be 6371km, and its mass to be 5.97 X

    asked by Abdurhman on January 21, 2017
  57. Physics

    At what altitude above the Earth's surface would your weight be three-fourths of what it is at the Earth's surface? Assume re = 6.371 10^3 km.

    asked by Amanda on October 3, 2009
  58. Physics

    How far above the surface of the Earth does an object have to be in order for it to have a weight which is 0.53 times the same weight as it would have on the surface of the Moon? (Ignore any effects from the Earth's gravity for the object on the Moon's

    asked by Lucy on February 8, 2012
  59. physics

    A boulder weighs 800N at the surface of the earth. What would be its weight at a distance of three earth's radii from the center of the earth?

    asked by weng on July 8, 2010
  60. physics

    A boulder weighs 800N at the surface of the earth. What would be its weight at a distance of three earth's radii from the center of the earth?

    asked by weng on July 7, 2010
  61. Physics

    A satellite is orbiting the earth just above its surface. The centripetal force making the satellite follow a circular trajectory is just its weight, so its centripetal acceleration is about 9.81 m/s2 (the acceleration due to gravity near the earth's

    asked by on April 15, 2013
  62. 465465

    A satellite is orbiting the earth just above its surface. The centripetal force making the satellite follow a circular trajectory is just its weight, so its centripetal acceleration is about 9.81 m/s2 (the acceleration due to gravity near the earth's

    asked by Anonymous on September 22, 2010
  63. physics

    I need help! i don't know how to do this problem. average atmospheric pressure at earth's surface is 1.01 x 10^5 N/m^2. Earth's radius is 6.37 x 10^6m. Show that the total weight of earth's atmosphere is about 5.15 x 10^19 N.

    asked by Chandler on May 28, 2013
  64. 11th grade physics

    how high above the surface of the Earth would an object need to be for its weight to be half its weight on the surface?

    asked by Archie on November 8, 2010
  65. physics

    how high above the surface of the Earth would an object need to be for its weight to be half its weight on the surface?

    asked by Archie on November 8, 2010
  66. physics

    how high above the surface of the Earth would an object need to be for its weight to be half its weight on the surface?

    asked by Archie on November 8, 2010
  67. maths

    body of weight is inversely propotional to square of its distance from center of earth,radius of the earth is 6380 km, how much 80 kg man weigh 1600 km from the surface of earth

    asked by Anonymous on February 16, 2014
  68. Physics

    Acceleration due to gravity on the moon's surface is 1/6th that on the earth . An object weight 900N on the earth . What does it weight on the moon ?

    asked by Maryam on November 16, 2013
  69. Algebra II

    The weight of a body varies inversely as the square of its distance from the center of the earth. If the radius of the earth is 4000 mi, how much would a 200 lb man weigh 1000 mi above the surface of the earth?

    asked by MJ on January 3, 2013
  70. Physics

    What is the ratio of the wight of a man when he is in a tunnel 1000 km below the surface of the Earth to his weight at the surface? ...I'm not sure how to proceed, not because I don't know how to do it, but because I have no idea how to come up with a(g)

    asked by Nora on April 4, 2015
  71. Math - Algebra

    If a man wewighs 41 newtons (N) on the surface of the earth while he weighs 81.5N on the surface of the moon, approximately how much lighter is he on the moon? What would be his weight on the surface of the earth if he weighs 90 N on the surface of the

    asked by McKenna Louise on November 11, 2013
  72. Physics

    I have a hard time solving this problem. The weight of an object at the surface of a planet is proportional to the planet's mass and inversely proportional to the square of the radius of the planet. Jupiter's radius is 11 times Earth's and its mass is 320

    asked by Nisar on August 28, 2005
  73. Math & science

    Earth has a radius of about 6.4*10^m. What is the approximate surface are of Earth? Use the formula for the surface area of a sphere,S= 4 pi ^2 . Oceans cover about 70% of the surface of the Earth.A bout how many squares of Earth's surface are covered by

    asked by patama on October 16, 2018
  74. Math

    The weight w of an object varies inversely as the square of the distance d from the center of the earth. At sea level (3978 miles from the center of the earth), an astronaut weighs 110 pounds. Find her weight when she is 139 miles above the surface of the

    asked by Stacy on September 24, 2014
  75. Physics

    Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun but a much smaller diameter. If you weigh 665 on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun

    asked by Mikhail on April 4, 2010
  76. Physics

    Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun but a much smaller diameter. If you weigh 665N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun

    asked by Mike on April 5, 2010
  77. Physics

    A satellite is put into an orbit at a distance from the center of the Earth equal to twice the distance from the center of the Earth to the surface. If the satellite had a weight at the surface of 4000 N, what is the force of gravity (weight) of the

    asked by Felice on September 30, 2017
  78. Physics

    How far above the surface of the Earth does an object have to be in order for it to have the same weight as it would have on the surface of the Moon? (Ignore any effects from the Earth's gravity for the object on the Moon's surface or from the Moon's

    asked by Max on February 22, 2010
  79. Physics

    For which of the following situations can the equation F = mg not be used to calculate the force due to gravity? a) The pull of gravity on an apple on the surface of the Earth. b) The pull of gravity on an airplane flying at an altitude of 8 km above the

    asked by Kelvin on November 19, 2012
  80. Physics

    What is the Earth's gravitational force on you when you are standing on the Earth and when you are riding in the Space Shuttle 380 km above the Earth's surface? Answer as a fraction of the surface gravity of Earth. (The Earth's radius is 6400 km.)

    asked by Kayla on January 27, 2015
  81. physics

    An apple falls from an apple tree growing on a 20° slope. The apple hits the ground with an impact velocity of 5.7 m/s straight downward. What is the component of the apple's impact velocity parallel to the surface of the slope?

    asked by meme on February 13, 2013
  82. physics

    An apple falls from an apple tree growing on a 20° slope. The apple hits the ground with an impact velocity of 14 m/s straight downward. What is the component of the apple's impact velocity parallel to the surface of the slope?

    asked by Sharefa on February 29, 2012
  83. Math

    Leah liked to balance objects she found around the house using the science kit she got for Christmas. She found that 3 identical apples and a 5-gram weight exactly balanced a 50-gram weight. Leah said she could tell how much each apple weighed by solving

    asked by Ariana on April 19, 2010
  84. math 4th grade

    Leah liked to balance objects she found around the house using the science kits she got for Christmas. She found that 3 identical apples and a 5-gram weight exactly balanced with a 50-gram weight.Leah said she could tell how much each apple weighed by

    asked by Mikayla on April 15, 2010
  85. physics

    the mass of a body is 50 kg on the surface of the earth.find its weight on the surface of a planet whose mass is double than the mass of the earth and radius is 5 times the radius of the earth

    asked by geeta on December 8, 2011
  86. Science/Physics

    Andee has a mass of 68.5 kg on earth. What is his weight on Earth? What should his mass be in order to have the same weight at the surface of the moon?

    asked by Gwyn Kyla Agduma on July 31, 2014
  87. physics

    If you weigh 650 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 15.0 km ? Take the mass of the sun to be ms = 1.99×10^30 kg, the gravitational constant to be G =

    asked by Kristina on March 29, 2012
  88. Physics

    If you weigh 670 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 15.0 km ? Take the mass of the sun to be ms = 1.99×1030 kg , the gravitational constant to be G = 6.67×10−11

    asked by Ane on July 22, 2016
  89. chemistry

    When brought to the surface of the moon, will a mass have more or less weight than it did on the surrface of the earth, or will it be the same weight? explain

    asked by Anonymous on September 19, 2010
  90. physics

    the radius of earth is 6000km what will be the weight of a 120 kg body if it is taken to a height of 2000km above the surface of earth?

    asked by disha on January 21, 2018
  91. Chem

    what is the meaning of "accepted value" with respect to an experimental measurement? Accepted value means that the majority of reasonable folks will accept that value as true. O thanks.. one more question When brought to the surface of the moon, will a

    asked by Justin on January 11, 2007
  92. physics

    Newton was holding an apple of mass 120 g and thinking about the gravitational forces exerted on the apple by himself and by the Sun. Calculate the magnitude of the gravitational force acting on the apple due to Newton, the Sun, and the Earth, assuming

    asked by mymi on October 30, 2011
  93. Physics

    The mass of an astronaut is 72kg. (a) what is his weight on earth ( taking g to be 10N/kg) ? (b) if the astronaut is on the moon's surface where the acceleration due to gravity is one-sixth on the earth , calculate (I) the mass (ii) the weight of the

    asked by Lina on June 2, 2011
  94. physics

    How high does a rocket have to go above Earth's surface until its weight is one fourth what it would be on Earth?

    asked by johnny on April 19, 2011
  95. physics

    Assume a planet is a uniform sphere of radius R that (somehow) has a narrow radial tunnel through its center. Also assume we can position an apple anywhere along the tunnel or outside the sphere. Let FR be the magnitude of the gravitational force on the

    asked by Kylie on January 2, 2011
  96. physics

    using 6400 km as the radius of earth, calculate how high above earth's surface you would have to be in order to weigh 1/16th of your current weight.

    asked by gabby on November 14, 2014
  97. physics

    If the radius of the Earth somehow bloated to twice its size, with no changes in mass, your weight at the Earth's new surface would be ___A) one-quarter.B) one eighth.C) the same.D) twice.E) half.

    asked by Christie on March 4, 2012
  98. science

    object weighs 40 N on earth's surface. it would weight on 10 N when its distance from earth's center is doubled halved tripled or quadrupled thankyou

    asked by bob on January 25, 2011
  99. science

    object weighs 40 N on earth's surface. it would weight on 10 N when its distance from earth's center is doubled halved tripled or quadrupled thankyou

    asked by bob on January 25, 2011
  100. science

    Large craters are visible on the moon but not common on the earth's surface. Which of the following is the beady explanation of why large craters are not evident in the earth's surface in photos taken from space. A.three quarters of the earth's surface is

    asked by Tessy on January 23, 2016