The ____ depend(s) on the assumption that the mass of a galaxy or galactic cluster is large enough to keep moving matter bound to the main structure

a. rotation curve method
b. velocity dispersion and cluster methods
c. Shapley-Curtis and Hubble methods
d. recessional velocity method
e. tangential velocity method


b

Physics & Space Science

You might also like to view...

The triple alpha process requires higher temperatures to start and produces less energy for a given mass than the proton-proton chain.

Answer the following statement true (T) or false (F)

Physics & Space Science

If the average intensity of the sunlight in Miami, Florida, is 1040 W/m2,

what is the average value of the radiation pressure due to this sunlight on a black totally absorbing asphalt surface in Miami? (c = 3.00 × 108 m/s) A) 2.28 × 10-6 N/m2 B) 9.78 × 10-6 N/m2 C) 7.83 × 10-6 N D) 1.63 × 10-6 N/m2 E) 3.47 × 10-6 N/m2

Physics & Space Science

How long after the Big Bang was the Planck time, before which our current theories are completely unable to describe conditions in the universe?

A) 10-10 second B) 10-35 second C) 10-43 second D) 3 minutes E) 300,000 years

Physics & Space Science

For a capacitor in and ac circuit, how much energy is stored in the capacitor at the instant when current is zero?

A. 0.707 maximum B. half C. zero D. maximum

Physics & Space Science