The mass of a supermassive black hole thought to power a typical bright active galactic nucleus is roughly ________
A) 1 billion solar masses B) 3 solar masses
C) 10 solar masses D) 1 trillion solar masses
A
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Which of the following is not considered a fundamental particle?
A) an electron B) an up quark C) a neutrino D) a proton
Wilhelm Roentgen discovered
a. X-rays. b. gamma rays. c. radio waves. d. microwaves.
Each harmonic frequency is:
a. one more number times the fundamental frequency (i.e., fundamental frequency times two, times three, times four). b. the fundamental frequency plus one more number (i.e., fundamental frequency plus one, plus two, plus three). c. twice the previous frequency (second harmonic frequency is twice the fundamental frequency, third is twice the second). d. any combination of two or more frequencies. e. there is only one harmonic frequency.
You are driving at on a freeway curve of radius What is the magnitude of your acceleration?
A) 36.0 m/s2 B) 1.20 m/s2 C) 20.8 m/s2 D) 0.833 m/s2