1. physics

    On planet x, an object weighs 10.4N. On planet B where the magnitude of the free fall acceleration is 1.48g (where g=9.8 m/s^2 is the gravitational acceleration on Earth),the object weighs 24.6N. The acceleration of gravity is 9.8 m/s^2. What is the mass
  2. physics

    On planet X, an object weighs 18.1 N. On planet B where the magnitude of the free-fall acceleration is 1.28 g (where g = 9.8 m/s 2 is the gravitational acceleration on Earth), the object weighs 37.9 N. The acceleration of gravity is 9.8 m/s 2 . What is the
  3. Pyhsics

    A) On planet X, an object weighs 19.2 N. On planet B where the magnitude of the free-fall acceleration is 1.17 g (where g = 9.8 m/s2 is the gravitational acceleration on Earth), the object weighs 34.9 N. The acceleration of gravity is 9.8 m/s2 . What is
  4. algebra

    the weight of an object varies inversely as the square of its distance from the center of the planet it is on. If a person weighs 180 pounds on a planet's surface, what is his weight 250 miles above the surface of the planet? The planet's radius is 7000
  5. physics

    An object of mass 5 kg weighs 30 N on planet Z. The acceleration due to gravity on planet z is? a) 30 m/s^2 b) 10 m/s^2 c) 6 m/s^2 d) 0.17 m/s^2 e) 150 N
  6. Physics: How much do you way on another planet

    A person weighs 900 N on Earth. What would he weigh on another planet, where the free-fall acceleration is 26.4 m/s2? Answer in units of N.
  7. physics

    a woman who weighs 150 lb. on earth would weigh 340 lb. on another planet, what is her mass on earth, what is her mass on the other planet, what is the magnitude of the gravitational field on the other planet
  8. physics

    An object rests on the surface of planet y. Its mass is unknown. Find the acceleration due to gravity near the surface of planet y. Answer in m/s/s. G=6.673x10^-23 radius of planet y=2439700m mass of planet y=3.302x10^23kg radius of planet x=71492000m mass
  9. physics

    an object is released from rest on a planet that has no atmosphere.the object falls freely for 3.46 m in the first second.what is the magnitude of the acceleration due to the gravity on the planet?
  10. Physics

    An object is released from rest on a planet that has no atmosphere. The object falls freely for 2.73 m in the first second. What is the magnitude of the acceleration due to gravity on the planet?
  11. physics

    An object is released from rest on a planet that has no atmosphere. The object falls freely for 5.03 m in the first second. What is the magnitude of the acceleration due to gravity on the planet? Answer in units of m/s2
  12. college

    A spaceship lands on the planet whose radius is 5 times that of planet earth and whose mass is 25 times that of planet earth. Find the apparent weight of the astronaut on the second planet if the astronaut weighs 150lbs on planet earth
  13. physics

    Planet Z is 1.00×10^4 km in diameter. The free-fall acceleration on Planet Z is 10.0 m/s^2. a)What is the mass of Planet Z? b)What is the free-fall acceleration 9000 km above Planet Z's north pole?
  14. PHYSICS PLEASE HELP !!!!!

    On some planet with a radius of 8,553 km and a mass of 5.55 x 1024 kg the planet is spinning so fast such that anything at the equator will fly off of the planet. What is the planet's period (length of a day on the planet) in hours? Please help me solve !
  15. physic 1010 first year university

    Planet Z is 9000 km in diameter. The free-fall acceleration on Planet Z is 10.0 m/s^2.What is the mass of Planet Z?
  16. Physics

    At planet X, there is another planet called Y about 34 million light years away. The radius of planet X is 1 * 10^9 m. How far away from the center of the planet X is the planet Y in meters?
  17. Physics

    Imagine you are an astronaut who has landed on another planet and wants to determine the free-fall acceleration on that planet. In one of the experiments you decide to conduct, you use a pendulum 0.47 m long and find that the period of oscillation for this
  18. Physics

    Imagine you are an astronaut who has landed on another planet and wants to determine the free-fall acceleration on that planet. In one of the experiments you decide to conduct, you use a pendulum 0.47 m long and find that the period of oscillation for this
  19. science

    if all of the following imaginary planets were the same distance from the sun, which would experience the strongest force of gravity due to the sun? planet a: mass 3,500 kg planet b: mass 50,000 kg planet c: mass 750 kg planet d: mass 100,000 kg a)planet a
  20. Physics

    On some strange planet you find that a 17.4 kg object falls downward 24.6 meters in 3.4 seconds. What is the magnitude of the acceleration due to gravity on this planet?
  21. physics

    A planet orbits a star, in a year of length 4.46 x 107 s, in a nearly circular orbit of radius 3.17 x 1011 m. With respect to the star, determine (a) the angular speed of the planet, (b) the tangential speed of the planet, and (c) the magnitude and
  22. Physics

    The free-fall acceleration at the surface of planet 1 is 18 m/s^2. The radius and the mass of planet 2 are twice those of planet 1. What is the free-fall acceleration on planet 2?
  23. physics

    A 2.5 kg mass weighs 23.75 N on the surface of a planet similar to Earth. The radius of this planet is roughly 7.7 × 10 6 m.Calculate the mass of of this planet. The value of the universal gravitational constant is 6.67259 × 10−11N · m2/kg2
  24. physics

    A 4 . 7 kg mass weighs 39 . 95 N on the surface of a planet similar to Earth. The radius of this planet is roughly 6 . 2 × 10 6 m. Calculate the mass of of this planet. The value of the universal gravitational constant is 6 . 67259 × 10 − 11 N · m
  25. physics

    A 2.5 kg mass weighs 23.75 N on the surface of a planet similar to Earth. The radius of this planet is roughly 7.7 × 10^6 m. Calculate the mass of of this planet. The value of the universal gravitational constant is 6.67259 × 10^−11N · m2/kg2.
  26. physics

    A 3.3 kg mass weighs 30.03 N on the surface of a planet similar to Earth. The radius of this planet is roughly 7.4 × 106 m. Calculate the mass of of this planet. The value of the universal gravitational constant is 6.67259 × 10−11 N · m2/kg2.
  27. physics

    An object is released from rest on a planet that has no atmosphere. The object falls freely for 5.02 m in the first second. What is the magnitude of the acceleration due to gravity on the planet? Answer in units of m/s can someone help me please? i
  28. Physica

    A 21.0-kg satellite has a circular orbit with a period of 2.37 h and a radius of 8.50×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 7.10 m/s2, what is the radius of the planet? I
  29. physics

    Astonomers discover a new planet orbiting a fixed point in space, but for reasons unknown, they can't directly observe a star where one is expected. The radius of the orbit is measured to be 1.85 x 10^8 km, and the lone planet completes an orbit once every
  30. Physics

    NASA, when it sends probes to other planets, uses what is known as a gravitational slingshot. This is when a probe uses the gravitational potential energy a planet to gain kinetic energy. Even though the probe and the planet are not physically colliding,
  31. Physics

    NASA, when it sends probes to other planets, uses what is known as a gravitational slingshot. This is when a probe uses the gravitational potential energy a planet to gain kinetic energy. Even though the probe and the planet are not physically colliding,
  32. Physics-Gravity

    A 17.0-kg satellite has a circular orbit with a period of 2.31 h and a radius of 9.10×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 8.10 m/s2, what is the radius of the planet?
  33. Math

    an object’s weight on a planet is directly proportional to the mass of that planet and inversely proportional to the square of the radius of the planet. jupiter is 318 times as massive as Earth and has a radius 11 times as large as that of Earth. if
  34. phys

    An astronaut drops an object from rest (relative to the planet) on a planet alpha (having the same radius as of earth) from an altitude of one radius above the surface. When the object hits the surface its speed is 3.98 times what it would be if the same
  35. Physics

    At the surface of a certain planet, the gravitational acceleration g has a magnitude of 12.0 m/s^2. A 21.0-kg brass bell is transported to this planet. What is (a) the mass of the brass ball on the Earth and on the planet, and (b) the weight of the brass
  36. 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
  37. Physics

    When a small object is launched from the surface of a fictitious planet with a speed of 52.0 m/s, its final speed when it is very far away from the planet is 32.0 m/s. Use this information to determine the escape speed of the planet.
  38. physics

    On Planet Y, the value of g is 12 m/s/s. If the human weighs 685 N on this planet, then how much woud he weigh on earth?
  39. physics

    A 17.0-kg satellite has a circular orbit with a period of 2.31 h and a radius of 9.10×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 8.10 m/s2, what is the radius of the planet?
  40. Physics

    What is the force of gravity at 220 miles above Earth's surface? Calculate how much of a g force the astronauts are actually experiencing. The solution for this math problem is a percentage. You can calculate it using the Algebraic equation: gr = R2/r2 x g
  41. physics

    An object is lifted from the surface of a spherical planet to an altitude equal to the radius of the planet. As a result, what happens to the mass and wieght of the object?
  42. Physics

    On a distant planet, a freely falling object has an acceleration of 17m/s2m/s^2 . Calculate the speed that an object dropped from rest on this planet acquires in 2.0ss .
  43. Physics

    A 21.0-kg satellite has a circular orbit with a period of 2.37 h and a radius of 8.50×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 7.10 m/s2, what is the radius of the planet?
  44. Astrophysics

    You know M(r) = v^2r /G d = distance; s= speed Planet 1: d=2/s=120 Planet 2: d=4/s=60 Planet 3: d=9/s=40 Planet 4: d=16/s=30 Planet 5: d=36/s = 20 You use the distance and orbital speed of the first planet to determine the mass enclosed within the orbit of
  45. Physics

    An object is allowed to fall freely near the surface of an unknown planet. The object falls 80 meters from rest in 5.0 seconds. The acceleration due to gravity on that planet is? Would the answer be 16?
  46. physics

    A planet with a mass of (7*10^21) kg is in a circular orbit around a star with a mass of (2*10^30) kg. The planet has an orbital radius of (3*10^10) m. (a) What is the linear orbital velocity of the planet? (b) What is the period of the planet's orbit? (c)
  47. physic

    Planet A and planet B are in circular orbits around a distant star. Planet A is 4.5 times farther from the star than is planet B. What is the ratio of their speeds vA/vB?
  48. physics

    Planet A and planet B are in circular orbits around a distant star. Planet A is 8.0 times farther from the star than is planet B .What is the ratio of their speeds ?
  49. physic

    Planet A and planet B are in circular orbits around a distant star. Planet A is 4.5 times farther from the star than is planet B. What is the ratio of their speeds vA/vB?
  50. physics please help

    On the surface of a planet an object is thrown vertically upward with an initial speed of 60 m/s. use a conservation of energy approach to determine the object's speed when the object is at a quarter of it's maximum height. (assume the planet has no
  51. physics....

    Spherical planet A has mass m and radius r. Spherical planet B has mass and  radius 2r. How does the gravitational field strength at the surface of planet B compare to the gravitational field strength at the surface of planet A? a) It is the same
  52. physics

    Planets A and B orbit the same star. Planet B is four times further from the star than planet A and has twice the mass of planet A. The gravitational force of the star on planet B is ____ the force on planet A.
  53. PHYSICS(HELP)

    A satellite with a mass of ms = 7.00 × 103 kg is in a planet's equatorial plane in a circular "synchronous" orbit. This means that an observer at the equator will see the satellite being stationary overhead (see figure below). The planet has mass mp =
  54. Physics

    Astronomers can calculate the mass of a planet by using the orbital parameters of one of its moons. Consider a hypothetical planet, which has a hypothetical moon that orbits the planet in a roughly circular orbit with a radius of 3.95*10^8 m. The moon
  55. Physics?

    What information do you need to calculate the altitude of a satellite’s planet-synchronous orbit? (check all that apply) Mass of the planet Radius of the planet Mass of the satellite Period of the planet's rotation on axis Period of the planet's rotation
  56. Physics

    Calculate the work done by planet X on its moon. Planet X applies a force of 5.6 x 10^10 N on its moon and the moon is 4.0 x 10^8 km away from the planet and it continues to circle the planet in a circular orbit of circumference of 2.5 x 10^9 m.
  57. physics

    A tennis ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s. One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s. What is the magnitude of the acceleration
  58. Physics (please help)

    A planet is in circular orbit about a remote star, far from any other object in the universe. Which of the following statements is true? a. None of the other statements are true. b. There is only one force acting on the planet. c. There are two forces
  59. trigonometry

    If a planet has a semimajor axis of 2 AU (astronomical units) a) what would the semimajor axis of a superior planet be if the angle of greatest elongation for the inferior planet is 20 degrees as viewed from the superior planet? b) assuming a day on the
  60. physics

    On the way from a planet to a moon, astronauts reach a point where that moon’s gravitational pull transitions from being weaker than that of the planet to being stronger than that of the planet. The masses of the planet and the moon are, respectively,
  61. 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
  62. Just Curious

    A few questions out of curiosity. What does jiskha mean? And what is your view point of Pluto Since Pluto is no longer considered a planet, do you think it should still e called a planet? Not just dwarf planet, but a planet like Mars or Earth? Thanks and
  63. Physics help please!

    While visiting Planet Physics, you toss a rock straight up at 13.6 m/s and catch it 3.50 s later. While you visit the surface, your cruise ship orbits at an altitude equal to the planet's radius every 340.0 minutes. What is the radius (in m) of the planet?
  64. Physics please help

    While visiting Planet Physics, you toss a rock straight up at 13.6 m/s and catch it 3.50 s later. While you visit the surface, your cruise ship orbits at an altitude equal to the planet's radius every 340.0 minutes. What is the radius (in m) of the planet?
  65. Physics Find mass and radius of planet.

    While visiting Planet Physics, you toss a rock straight up at 15 m/s and catch it 2.4 s later. While you visit the surface, your cruise ship orbits at an altitude equal to the planet's radius every 240 min. What is the mass of Planet Physics? What is the
  66. physics

    You have arrived at a new planet and put your starship into a circular orbit at a height above the surface that is equal to two times the radius of the planet. Your speed is 4300 m/s and it takes 7 hours and 18 minutes to complete an orbit. a. What is the
  67. physics

    An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 10.0 m if her initial speed is 2.60 m/s. What is the free-fall acceleration on the planet?
  68. physics

    An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 10.0 m if her initial speed is 2.60 m/s. What is the free-fall acceleration on the planet?
  69. physics

    An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 15.0 m if her initial speed is 2.40 m/s. What is the free-fall acceleration on the planet?
  70. physics

    An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 17.0 m if her initial speed is 3.80 m/s. What is the free-fall acceleration on the planet?
  71. PHYSICS!!!!!

    An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 19.0 m if her initial speed is 3.80 m/s. What is the free-fall acceleration on the planet?
  72. Physics help please

    You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 2.070E+7 m and its rotation to be 19.8 hours. You have previously determined that the planet orbits 1.590E+11 m from its star with
  73. Free Fall

    The acceleration due to gravity on planet X is one fifth that on the surface of the earth. If it takes 3.9 s for an object to fall a certain distance from rest on earth, how long would it take to fall the same distance on planet X?
  74. physics, how to find the height

    On the surface of a planet an object is thrown vertically upward with an initial speed of 60 m/s. use a conservation of energy approach to determine the object's speed when the object is at a quarter of it's maximum height. (assume the planet has no
  75. physics

    If the mass of a planet is 3.80 1024 kg, and its radius is 2.20 106 m, what is the magnitude of the gravitational field, g, on the planet's surface?
  76. Science

    Why the weight of an object varies from planet to planet
  77. Physics

    planet orbits a star once every 2.84 10^7 s in a nearly circular orbit of radius 1.42 10^11 m. (a) With respect to the star, determine the angular speed of the planet. (b) With respect to the star, determine the tangential speed of the planet. (c) With
  78. Physics

    The acceleration due to gravity on a planet other than the earth has a magnitude of 1.50 m/s2. As in examples 6, 7 and 8, a placekicker kicks a football with an initial speed of 20.3 m/s at an angle of 39.4 ° above horizontal. Assume that the ball is
  79. Physics

    A planet has a mass of 6.15 × 1023 kg and a radius of 3.25 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 79.4-kg person weigh on this planet?
  80. physics

    A planet has a mass of 6.08 × 1023 kg and a radius of 2.62 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 63.6-kg person weigh on this planet?
  81. physics

    A planet has a mass of 5.71 × 1023 kg and a radius of 3.93 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 61.8-kg person weigh on this planet?
  82. Physics

    A planet has a mass of 6.22 × 1023 kg and a radius of 2.51 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 77.7-kg person weigh on this planet?
  83. 11th grade

    What is the acceleration on planet X, if a 1.5 kg object weighs 3.45 N on plantet X?
  84. Genetics, HELP!!!

    Planet X, a recently discovered planet, contains life forms that have double-stranded DNA as the genetic material. The DNA on Planet X is transcribed into RNA which is translated into protein. Planet X DNA contains only two bases: guanine (G) and cytosine
  85. Physics/Maths

    Keplers third law I understand. T^2/a^3 of one planet = T^2/a^3 second planet. But I can't do the algebra to solve for the second planet's a^3 (semimajor axis) Would someone walk me through the steps please? Thanks.
  86. Physics

    A ball is shot vertically upward from the surface of another planet. A plot of y versus t for the ball is shown in the figure below, where y is the height of the ball above its starting point and t = 0 at the instance the ball is shot. The figure’s
  87. physics

    acceleration due to gravity questions when an object is dropped from a height of 10m above the surface of the planet z, it takes 1.2 seconds for the object to reach the surface. what is the acceleration of a falling object near the surface of the planet?
  88. Physics

    Spaceman Fred orbits planet X with his spaceship. To remain in orbit at 410km from the planet's center, he should maintain a speed of 68 m/s. What is the mass of planet X?
  89. Physics

    Spaceman Spiff orbits planet X with his spaceship. To remain in orbit at 410km from the planet's center, he should maintain a speed of 68 m/s. What is the mass of planet X?
  90. College Physics - Weight

    A planet has a mass of 7.93 × 1023 kg and a radius of 2.58 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 67.0-kg person weigh on this planet?
  91. 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
  92. space

    What is the force of gravity at 220 miles above Earth's surface? Calculate how much of a g force the astronauts are actually experiencing. The solution for this math problem is a percentage. You can calculate it using the Algebraic equation: gr = R2/r2 x g
  93. physics

    A rock falls from rest a vertical distance of 0.63 meters to the surface of a planet in 0.48 seconds. What is the magnitude of the acceleration due to gravity on that planet?
  94. calculus 2

    An object thrown in the air on a planet in a distant galaxy is at height s(t) = -20t^2 +67t +42 feet at time t seconds after it is thrown. a) From what height was the object thrown? b) With what velocity was the object thrown? c) What is the acceleration
  95. 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
  96. physics

    person weighs 526 N on Earth. Another planet has twice the mass of Earth and Twice the radius of Earth. Find the weight on the other planet. I need help with a formula too.
  97. math

    If planet I is 31.8 million miles from the sun than planet II, then planet III is 25.6 million miles father from the sun than planet I. When the total of the distances for these three planets from the sun is 200.2 million miles, how far away from the sun
  98. physics

    when an object is dropped frome a hight of 20m above the surface of planet Z, it will fall 5m during the 2nd second of fall. What is the acceleration of a falling object near the surface of this planet?
  99. physics

    A planet orbits a star once every 3.14x10^7 s in a nearly circular orbit of radius 1.51x10^11 m. (a) With respect to the star, determine the angular speed of the planet b) With respect to the star, determine the tangential speed of the planet. c) With
  100. Physics

    a 4 kg object is taken to a planet that has 3 times the mass of earth and 1/2 the radius of earth. On this planet the mass of the object will be most nearly.. A. 12kg B. 3kg C. 48kg D. 4kg E. 24 kg