Extrasolar planetary systems are similar to our solar system in all of the following ways, EXCEPT:
A) that planetary orbits are relatively coplanar.
B) for the presence of hot Jupiters in some systems.
C) that planets orbit in the same direction that their parent star rotates.
D) that the systems contain interplanetary debris, such as comets or asteroids.
E) None of these are dissimilar to our solar system.
B
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When you compress air with a tire pump, the air temperature in the tire
A) increases. B) decreases. C) remains unaffected. D) none of the above
Compared to a hydrogen atom where the proton and electron both have spin in the same direction, an atom where they spin in opposite directions will have ________ energy
Fill in the blank(s) with correct word
A train is traveling away from you at 120 km/h. It blows its whistle, and you hear a tone of 0.400 kHz. Take the speed of sound to be 340 m/s. What frequency does the whistle actually produce?
A) 444 Hz B) 439 Hz C) 364 Hz D) 361 Hz
A string is held taut between two supports 2.0 m apart. The longest and next-longest possible wavelengths for standing waves are
A. 6 m and 3 m. B. 16 m and 5.3 m. C. 4 m and 2 m. D. 8 m and 4 m.