Olympus Mons, the largest known volcano in the solar system, is found on ________.
A) Earth
B) Venus
C) Jupiter
D) Mars
Answer: D) Mars
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What was Erwin Schroedinger's main contribution to the development of quantum theory?
A) He explained the photoelectric effect, in terms of photons. B) He found a way to predict the overall statistical patterns that appear in the double-slit experiment with electrons and other experiments. C) He discovered the uncertainty principle. D) He found a way to predict the precises position at which electrons or other particles will strike the viewing screen in such experiments as the electron double-slit experiment. E) He discovered the nonlocality principle.
Which of these stars lies closest to the north celestial pole on the celestial sphere?
A) Deneb B) Alpha Centauri C) Spica D) Sirius
Which galaxies contain less than 1,000 galaxies?
a. obtuse b. middle class c. poor d. rich
A 50.0 cm long organ pipe is filled with air and is open at both ends. The velocity of sound in air at 0is 331 m/s. What is the frequency of the second mode?
A. 662 Hz B. 621 Hz C. 587 Hz D. 562 Hz E. 550 Hz