Homework

# As Jupiter (or any planet) orbits the sun, the sun responds…

As Jupiter (or any planet)...
As Jupiter (or any planet) orbits the sun, the sun responds by orbiting in a much smaller “orbit” around their mutual center of mass.

a) At what distance from the center of the sun is the Sun-Jupiter center of mass?

b) What is the sun’s circular velocity around that center of mass?

c) If an alien civilization were observing our solar system (conveniently edge-on so they see the maximum velocity), how small a velocity would they need to be able to detect to infer the presence of Earth by observing the sun’s radial velocity?
Show More
Show Less
10/5/2012
Category: Homework
Satisfied Customers: 1,890
Experience: Inner-city high school substitute teacher. Degrees in mathemetics, accounting, and education. Years and years of tutoring.
Verified

Ray Atkinson :

What units are desired for the velocity? m/s? km/yr?

JACUSTOMER-205xr11h- :

m/s

Ray Atkinson :

A. The Sun-Jupiter barycenter is 742000 km from the center of the Sun.
B. 742000 * 2π =(NNN) NNN-NNNN Divide that by the 11.86 years that Jupiter takes to orbit, and you get 393096 km/yr. Translate that to m/s and you get 12.46 m/s
C. The Sun-Earth barycenter is measly 449 km from the Sun's center, and the sun revolves around that point once a year. 449 * 2π = 2820 km/yr or 0.089 m/s or about 9 cm/sec

JACUSTOMER-205xr11h- :

Thank you! Could you explain B a little more to me? I'd just like to know what equations you used and/or where the numbers are coming from? For instance, what's the 2n at the beginning?

Ray Atkinson :

C = 2·pi·r
742000 · 2 · pi =(NNN) NNN-NNNN This is the distance the sun will travel around that point. Jupiter takes 11.86 years to go around the Sun, so the Sun will move around that point in the same period. (NNN) NNN-NNNN/ 11.86 = 393096 km/yr

(393096) km/yr * (1000) m/km * (1 / 31536000) yr/sec = 12.465 m/sec

JACUSTOMER-205xr11h- :

Ah, of course. Thank you again! (:

Ray Atkinson :

I am of course simplifying things a bit, making the orbit circular, but the difference probably is less than the significant figures.

Ray Atkinson :

Jupiter's eccentricity is only 0.0484, so it is not much of a simplification.

Category: Homework
Satisfied Customers: 1,890
Experience: Inner-city high school substitute teacher. Degrees in mathemetics, accounting, and education. Years and years of tutoring.
Verified
Category: Homework
Satisfied Customers: 1,890
1,890 Satisfied Customers
Experience: Inner-city high school substitute teacher. Degrees in mathemetics, accounting, and education. Years and years of tutoring.

Ray Atkinson is online now

A new question is answered every 9 seconds

• Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
• Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

## What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

## Meet the Experts:

LogicPro

Engineer

5,731 satisfied customers

Expert in Java C++ C C# VB Javascript Design SQL HTML

Manal Elkhoshkhany

Tutor

4,551 satisfied customers

More than 5000 online tutoring sessions.

Linda_us

Finance, Accounts & Homework Tutor

3,138 satisfied customers

Post Graduate Diploma in Management (MBA)

Chris M.

M.S.W. Social Work

2,636 satisfied customers

Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)

F. Naz

Chartered Accountant

2,161 satisfied customers

Experience with chartered accountancy

Bizhelp

CPA

1,887 satisfied customers

Bachelors Degree and CPA with Accounting work experience

Seanna

Tutor

1,781 satisfied customers

3,000+ satisfied customers, all topics, A+ work

< Previous | Next >

Related Homework Questions
QUESTION 10 Alpha Inc., a U.S. firm, signs a contract with
QUESTION 10 Alpha Inc., a U.S. firm, signs a contract with Beta, Ltd., a Russian company, to give Beta the right to sell Alpha's products in Russia. This is usually known as: a. a distribution agreeme… read more
Chris M.
M.S.W. Social Work
Master's Degree
2,636 satisfied customers
QUESTION 1 The International Trade Administration (ITA) of the U.S. Department of Commerce regulates import competition by: a. Promotion of trade and investment b. Strengthening industry competitivene… read more
Chris M.
M.S.W. Social Work
Master's Degree
2,636 satisfied customers
4. What is entered into a cell that is typically numeric and
4. What is entered into a cell that is typically numeric and can be used for calculations? A. Function B. Label C. Value D. Tab Question 5 of 20 : Select the best answer for the question. 5. Which is … read more
Cher
Masters Degree
1,382 satisfied customers
1. What keeps Pip from accepting Herbert's job offer? A. His
1. What keeps Pip from accepting Herbert's job offer? A. His pride in being a gentleman B. A reluctance to work for Herbert C. Caring for Magwitch during his illness and trial D. Feeling that becoming… read more
Chris M.
M.S.W. Social Work
Master's Degree
2,636 satisfied customers
For ashok kumar, Two single-phase transformers with the same
For ashok kumar, Two single-phase transformers with the same kVA rating are connected in parallel. Their respective per unit values of resistance are 0.005 and 0.01 and the per unit values of reactanc… read more
Ashok Kumar
Master\u0027s Degree
291 satisfied customers
I have a marketing analytics question. Data, excel work.
I have a marketing analytics question. Data, excel work. … read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
QUESTION 21 Which of the following is a false statement? A.
QUESTION 21 Which of the following is a false statement? A. In order to meet the consideration requirement, the legal detriment suffered by each party must have been given in exchange for that of the … read more
RobertJDFL
Attorney
Juris Doctorate
5 satisfied customers
I have a school assignment; I have to write a motion in
Hello there, I have a school assignment; I have to write a motion in liming regarding "Plaintiff lying to a professor about a stolen laptop" Plaintiff told professor laptop was stolen but one of her f… read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
Mean number of goals scored by the Panthers: 13; Data set:
Mean number of goals scored by the Panthers: 13; Data set: 9,15,14 (what is this missing #)?Thank you!… read more
Bachelor of Education
3 satisfied customers
In a population study 80% are Mexiican American. From the
In a population study 80% are Mexiican American. From the probability chart 1-12f find out what the chances are x=12. P=.0625 … read more
GLENN
Master of Mathematics
397 satisfied customers
I have a question do want me to type it to you or is there a
i have a question do want me to type it to you or is there a fee that u will charge … read more
Ashok Kumar
Master\u0027s Degree
291 satisfied customers
I just need some help for my Tefl course. I need to make a
Hello. i just need some help for my Tefl course. I need to make a straight-arrow ESA lesson plan for an elementary level class of adults in which the students would learn the vocabulary for finding pl… read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
Choose one of the thirteenth-century literary forms
Choose one of the thirteenth-century literary forms discussed in the lesson "Thirteenth-Century Literature." Find more information about it in an encyclopedia or an anthology of medieval literature. R… read more
GLENN
Master of Mathematics
397 satisfied customers
I need help with an excel document. I have an excel document
I have an excel document that requires financial data put in the right columns from financial statement, balance sheet, and cash flow report from Alere Inc. I have the excel document and required financial report. … read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
Which of the following would measure the renal vein function
Which of the following would measure the renal vein function from the testicles to the kidney? Lower limb arterial doppler, lower limb venous doppler, carotid doppler, upper limb arterial doppler, upp… read more
GLENN
Master of Mathematics
397 satisfied customers
Im trying to write an equation to test the following
Im trying to write an equation to test the following hypotheses - Districts that provide employee cybersecurity education provide more cybersecurity education opportunities for students than districts… read more
GLENN
Master of Mathematics
397 satisfied customers
For ***** *. For this writing ,you'll write an essay in
For ***** *. For this writing ,you'll write an essay in which you acknowledge the reasonable people could support both mao's and ghandi perspective on ways to achieve independence. You'll also present… read more
GLENN
Master of Mathematics
397 satisfied customers
I have got an audio assignment in Spanish which I had to
I have got an audio assignment in Spanish which I had to translate and submit.. so can you help me with that? … read more
Cher