Why Is the Use of Hubble's Law to Measure Distances

question 2

Multiple Choice

Why is the use of Hubble's Law to measure distances to galaxies so important to astronomers?

• A) They have NO other way of measuring distances to galaxies - absolutely none
• B) Many galaxies don't move away from us, so when we find one that does, it's really a big deal
• C) Most galaxies are so far away, the only way to get distances to them is to use Hubble's Law
• D) The other ways of getting distances only work for really far away galaxies; so the Hubble Law is the only way to measure distances to nearby galaxies
• E) It's stretching the truth to say that Hubble's Law is a really important way to get distances to galaxies; really, it's no more important than any other method

Recognize the distinction between goodness-of-fit tests and tests for independence.

Calculate expected frequencies using binomial and multinomial distributions.

Understand the principles of autoxidation in organic compounds and identify compounds prone to this process.

Comprehend the reactivity of ethers in acidic conditions and predict the formation of products.