Question

Neptune is 30 AU away from the Sun on average. Use this distance along with Earth’s...

Neptune is 30 AU away from the Sun on average. Use this distance along with Earth’s (1 AU from the sun and orbits every year) to calculate how many earth years it takes Neptune to orbit the Sun.

Homework Answers

Answer #1

given the distance of earth from sun and its orbital period, we can find mass of sun ,

Using Kepler's third law

T2 = ( 42 / GM ) r3

(365 * 24 * 60 * 60)2 = ( 42 / 6.67e-11 * M ) 1.5e113

2.9467e-19 = 42 / 6.67e-11 * M

M = 2e30 Kg ( mass of Sun)

sun is central body for Neptune also,

so using same formula.

T2 = ( 42 / 6.67e-11 * 2e30 ) ( 30 * 1.5e11)3

T2 = 2.685e19

T = 5.181e9 seconds

or

T = 164.32 years

Therefore,

Neptune takes around 164 earth years to complete one orbit.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An astronomical unit (AU) is equal to the average distance from Earth to the Sun, about...
An astronomical unit (AU) is equal to the average distance from Earth to the Sun, about 92.9 × 106 mi. A parsec (pc) is the distance at which a length of 1 AU would subtend an angle of exactly 1 second of arc (the figure). A light-year (ly) is the distance that light, traveling through a vacuum with a speed of 186000 mi/s, would cover in 1.0 year. Express the Earth–Sun distance in (a) parsecs and (b) light-years.
A newly discovered comet orbits the sun at an average distance of 18.9 AU with an...
A newly discovered comet orbits the sun at an average distance of 18.9 AU with an eccentricity of e = 0.38. Calculate the comet's aphelion distance in AU using the equation:                          aphelion = a (1 + e). Give your answer to one decimal place. You will need to show your work, including units, in E1.36d.
The minimum distance of a comet from the Sun is observed to be an eighth of...
The minimum distance of a comet from the Sun is observed to be an eighth of the radius of the Earth’s orbit (which is assumed to be circular), and its speed at that point (the perihelion) is four times the orbital speed vE of the Earth. The orbits of the Earth and comet are coplanar. a) Find the comet’s speed in terms of vE when it crosses the Earth’s orbit, and the angle at which the orbits cross. b) Will...
Jupiter is 5.2 AU from the Sun. Based upon distance alone (i.e, if you were to...
Jupiter is 5.2 AU from the Sun. Based upon distance alone (i.e, if you were to place an Earth-mass planet at Jupiter's distance from the Sun), what would be the gravitational force between the Earth-mass planet at 5.2 AU and the Sun in units of "Earth-pulls?"
Suppose we could move Earth to the distance at which Jupiter orbits the Sun. Jupiter is...
Suppose we could move Earth to the distance at which Jupiter orbits the Sun. Jupiter is much more massive than Earth, and orbits every 11.9 years. What would the Earth's new period be? options: A. It would remain 1 year B. Between 1 and 11.9 years C. Also 11.9 years D. More than 11.9 years E. It would depend on the speed given to Earth F. It's impossible for a smaller massed planet like Earth to orbit at Jupiter's distance.
A light-year is the distance light travels in one year (atspeed=2.998×10^8m/s). An astronomical unit (AU) is...
A light-year is the distance light travels in one year (atspeed=2.998×10^8m/s). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50×10^8km. How many AU are there in 4.00 light-year?
The orbit of the comet Encke has a perihelion distance of 0.331 AU and an eccentricity...
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 years will it be before such an event happens again? a) about 9 months b) about 17 months c) about 13 years d) about 76 years
1.) A solar sail located 1 AU from the Sun, has a cross sectional area of...
1.) A solar sail located 1 AU from the Sun, has a cross sectional area of 1.00 km^2 facing the Sun. The sail has a mirror surface with an albedo of 0.90. Calculate the force exerted on the sail by sunlight. 2.) A shuttle orbits the Earth at an altitude of 300 km. You are attached to the shuttle by a rod of length 1200 m. You and the shuttle orbit at the same angular speed. The combined mass of...
An astronaut is traveling from the Earth to the planet Neptune. At a speed of 0.73...
An astronaut is traveling from the Earth to the planet Neptune. At a speed of 0.73 c, the trip takes 2.75 hours in the astronaut’s frame of reference. How much time does it take in the Earth’s frame of reference? What is the distance from the Earth to Neptune in the Earth’s frame of reference? While traveling in the rocket the astronaut measures the length of the ship to be 826 m and the radius to be 85.0 m. What...
5. An astronaut is traveling from the Earth to the planet Neptune. At a speed of...
5. An astronaut is traveling from the Earth to the planet Neptune. At a speed of 0.73 c, the trip takes 2.75 hours in the astronaut’s frame of reference. a) How much time does it take in the Earth’s frame of reference? b) What is the distance from the Earth to Neptune in the Earth’s frame of reference? c) While traveling in the rocket the astronaut measures the length of the ship to be 826 m and the radius to...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT