Re: [Phys-L] test 3

["Donald Polvani" <dgpolvani@verizon.net>]

Ludwig, apparently your posts are getting to people on the phys-l list
besides me, so if you are not seeing your own posts it must be something in
your own computer system that is causing the problem.  If your questions are
based on the gravitational wave generated due  to the collision, in my
understanding, the wave would travel at velocity c in any frame (just as a
light wave would).  However, I don't know enough gravitational wave theory
to compute the amplitude of the wave.  Perhaps, the theorists on this list
can help with an amplitude estimate.

Don 
-----Original Message-----
From: Phys-l [mailto:phys-l-bounces@www.phys-l.org] On Behalf Of Ludwik
Kowalski
Sent: Friday, April 1, 2016 3:39 PM
To: Phys-L@Phys-L.org
Subject: [Phys-L] test 3

Thank you Donald.

Please post these two questions for me:

Suppose our Sun is hit by a star of equal mass, traveling in the opposite
direction. The two stars fuse mechanically and remain in rest  (in the frame
of their center of mass). 

1) Will an ultra-sensitive seismometer, located on Earth, detect such
gravitational disturbance? 

2) I think that the speed of the disturbance would be practically c, in the
frame of the center of mass. Yes or NO ?

Ludwik Kowalski, Professor Emeritus
Montclair State University, NJ

I do not know why I am not able to post it myself.

Ludwik
===================================================

On Apr 1, 2016, at 3:29 PM, Donald Polvani wrote:

> I received both tests.
>
> Don
> Dr. Donald G. Polvani
> Adjunct Faculty, Physics, Retired
> Anne Arundel Community College
> Arnold, MD 21012
>
>
> -----Original Message-----
> From: Phys-l [mailto:phys-l-bounces@www.phys-l.org] On Behalf Of 
> Ludwik Kowalski
> Sent: Friday, April 1, 2016 2:59 PM
> To: phys-L new <phys-l@phys-l.org>
> Cc: Ludwik Kowalski <kowalskiL@montclair.edu>
> Subject: [Phys-L] test2
>
> test2
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