My orders
How it works
Examples
Reviews
Blog
Homework Answers
Submit
Sign in
How it works
Examples
Reviews
Homework answers
Blog
Contact us
Submit
Fill in the order form to get the price
Subject
Select Subject
Programming & Computer Science
Math
Engineering
Economics
Physics
Other
Category
Mechanics | Relativity
Electricity and Magnetism
Quantum Mechanics
Molecular Physics | Thermodynamics
Solid State Physics
Atomic and Nuclear Physics
Field Theory
Plasma Physics
Other
Deadline
Timezone:
Title
*
Task
*
{"ops":[{"insert":"Something massive seems to live in the centre of the Bloodstain - stars close to it are moving really fast. One such star (BZ2) is observed to be moving in an edge-on circle around the central mass. From the Doppler effect, its speed is measured to be 89000 km\/s. And when passing in front of the central mass, it has an apparent side-ways speed of 3 arcsec per (Earth) year.\nIt is not possible to measure the distance to the Bloodstain using parallax - Zing's orbit is too small and the Bloodstain too far away. But perhaps we can use these motions around the central mass to calculate a distance?\n"},{"attributes":{"bold":true},"insert":"Use these numbers to calculate the distance from Zing to the centre of the bloodstain (in parsecs):"},{"insert":"\n\n"}]}
I need basic explanations
Special Requirements
Upload files (if required)
Drop files here to upload
Add files...
Account info
Already have an account?
Create an account
Name
*
E-mail
*
Password
*
The password must be at least 6 characters.
I agree with
terms & conditions
Create account & Place an order
Please fix the following input errors:
dummy
