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
*
In a model of the universe, the Hubble parameter has the following functional form H(z) = H0(1 + z)^(5/4), where H0 is the Hubble constant. Answer the following questions: 1. Can a spectrograph that operates in the visible region of the electromagnetic spectrum (i.e. 0.38 um to 0.74 um) detect the Hb (H beta) line from a galaxy with a comoving distance D = c/2H0 (c being the speed of light). 2. How long did it take for light to reach an observer, at the present time, from a galaxy that has a redshift z = 2.0? Assume H0 = 67 km/s Mp/c. Express your result in Gyr.
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