raxu wrote:What is the accepted value of Hubble's Constant, H_0? The most recent measurements have fluctuated between 67 and 73...
Would you expect the grader to accept any correct calculations with a reasonable H_0?
Avogadro wrote:raxu wrote:What is the accepted value of Hubble's Constant, H_0? The most recent measurements have fluctuated between 67 and 73...
Would you expect the grader to accept any correct calculations with a reasonable H_0?
My notes have it as 73.8, based off of NASA. I'd expect the grader to accept it if it's reasonably close, but it's probably best to just keep up with the constant, since using a constant of 67 would yield a pretty different result than using 73.8 to the point where it may just appear completely wrong.
raxu wrote:What is the accepted value of Hubble's Constant, H_0? The most recent measurements have fluctuated between 67 and 73...
Would you expect the grader to accept any correct calculations with a reasonable H_0?
Avogadro wrote:A question for anyone who was at the Mira Loma invite: what did you think of that test? I took it recently and it was quite different from what I've usually seen, though apparently it's fine according to the rules.
embokim wrote:Hey, just wondering if any tests would when solving Hubble's law, whether they would give Doppler effect portion of it to find velocity? instead of straight up them giving the values? Has the Hubble's Law questions been straight forward? Thanks!
embokim wrote:Hey, just wondering if any tests would when solving Hubble's law, whether they would give Doppler effect portion of it to find velocity? instead of straight up them giving the values? Has the Hubble's Law questions been straight forward? Thanks!
embokim wrote:Suppose that now after a series of observations astronomers have deduced some properties of this pair of
stars. The parallax angle of this system is 0.0555…”. The mean separation of these two stars appears to
be 1.11”.
What is the semimajor axis of this binary star system, in AU?
How would you solve this question?
Thank You so much!
Unome wrote:On the same test: can anyone explain how to do 2.a and 2.c?
(that was a great test btw, I ended up scoring ~55 or so).
embokim wrote:Thank you so much! it helped me so much
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