Pulling out of a dive, the pilot of an airplane guides his plane into a vertical circle with a radius of 600 m. At the bottom of the dive, the speed of the airplane is 150 m/s. What is the apparent weight of the 70-kg pilot at that point?
A) 3300 N
B) 690 N
C) 2600 N
D) 490 N
E) 1400 N
A
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How is an x-ray burst (in an x-ray binary system) similar to a nova?
A) Both involve explosions on the surface of stellar corpse. B) Both typically recur every few hours to every few days. C) Both are thought to involve fusion of hydrogen into helium. D) Both result in the complete destruction of their host stars.
A quantity of a monatomic ideal gas expands to four times the volume while maintaining the same pressure. If the internal energy of the gas were U0 before the expansion, what is it after the expansion?
a. U0 b. 2U0 c. 4U0 d. The change in temperature must also be known to answer this question.
What is Tunguska?
A) the site of an asteroid impact that occurred in Siberia in 1908 B) a postulated binary companion to the Sun thought to be responsible for mass extinctions C) a long period comet that struck Jupiter in 1994 D) the Gulf of Mexico basin that is the crater of the asteroid impact that caused the mass extinction of the dinosaurs 65 million years ago E) a newly discovered moon of Pluto
Identify a true statement about asterisms and constellations
A) They are made up of stars that are not physically associated with one another. B) They are made up of stars that are of the same brightness. C) They are made up of stars that lie in different directions when viewed from Earth. D) They are made up of stars that do not move through space in different directions.