Which of the following best describes the internal layering of Jupiter, from the center outward?
A) core of rock, metal, and hydrogen compounds; thick layer of metallic hydrogen; layer of liquid hydrogen; layer of gaseous hydrogen; cloud layer
B) core of rock and metal; mantle of lower density rock; upper layer of gaseous hydrogen; cloud layer
C) solid rock core; layer of solid metallic hydrogen; layer of pure liquid hydrogen; cloud layer
D) liquid core of hydrogen compounds; liquid hydrogen layer; metallic hydrogen layer; gaseous hydrogen layer; cloud layer
A
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Two coherent sound waves will constructively interfere when the path difference is the wavelength times what?
A) half an integer B) an integer C) half an odd integer D) an even integer plus 1/2
Identical balls oscillate with the same period T on Earth. Ball A is attached to an ideal spring and ball B swings back and forth to form a simple pendulum. These systems are now taken to the Moon, where g = 1.6 m/s2, and set into oscillation
Which of the following statements about these systems are true? (There could be more than one correct choice.) A) Both systems will have the same period on the Moon as on Earth. B) On the Moon, ball A will take longer to complete one cycle than ball B. C) On the Moon, ball B will take longer to complete one cycle than ball A. D) On the Moon, ball A will execute more vibrations each minute than ball B. E) On the Moon, ball B will execute more vibrations each minute than ball A.
Express 50°C in °F
A) 50°F B) 45.6°F C) 59.8°F D) 122°F E) 148°F
At sea level, at a latitude where 
, a pendulum that takes 2.00 s for a complete swing back and forth has a length of 0.993 m. What is the value of g in m/s2 at a location where the length of such a pendulum is 0.970 m?
A. 0.098 3 B. 3.05 C. 9.57 D. 10.0 E. 38.3