Science

posted by Nikhil

istance of a planet from sun is four times the distance of the planet frpm earth.How many years will the planet take to complete one revolution of sun?

  1. Steve

    recall Kepler's 3rd law:

    P^2/a^3 is constant

    Now we have to interpret your statement. As it is, it is rather ambiguous. Read it carefully.

    Assuming the most convenient meaning, I'll say that if we substitute 4a for a, we have to find P' such that

    P'^2/(4a)^3 = P^2/a^3
    P' = 8P

    so, the period is 8 times as long.

Respond to this Question

First Name

Your Answer

Similar Questions

  1. help help help

    The asteroid belt between Mars and Jupiter consists of many fragments (which some space scientists think came from a planet that once orbited the Sun but was destroyed). (a) If the center of mass of the asteroid belt is about 2 times …
  2. Math

    The period of revolution of a planet around the sun is the time it takes for the planet to complete one orbit of the sun. The period, P years, is give by Kepler's third law P^2=D^3, where D is the average distance from the sun in astronomical …
  3. 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 …
  4. 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 …
  5. Physics

    1. Planet X orbits the sun with a mean orbital radius that is 6200 times that of earth. Its diameter is twice that of earth, and its mass is 8 times that of earth. A) Calculate the year of the planet X. B) Calculate the acceleration …
  6. earth

    planet is in circular orbit around the Sun. Its distance from the Sun is 2.9 times the average distance of Earth from the Sun. What is the period of this planet, in Earth years?
  7. physics

    Imagine a planet that orbited the sun at a distance three times that of Earth. What would the period of that planet be in Earth years?
  8. 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 …
  9. 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?
  10. Science

    What distance was used to define the astronomical unit (AU) A. the average distance across the sun, its diameter B. the average distance from the sun to mercury, the closest planet C. the average distance from the sun to earth, our …

More Similar Questions