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
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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
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)
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
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