What did the Huygens and Cassini probes find on the surface of Titan?
A) Rocks and no water
B) Methane oceans
C) An ocean and some lakes of methane, ethane, and other hydrocarbons
D) Lakes and oceans of water
E) No methane, no water; just rocks
C
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Vision Problems: What is the focal length of the corrective contact lens needed by a nearsighted person whose far point is at 60 cm?
A. -60 cm B. -30 cm C. +30 cm D. +60 cm E. +130 cm
A 5.00 kg mass is located at (2.00 m, 0.00 m, 3.00 m) and a 2.00 kg mass is located at (0.00 m, 4.00 m, –2.00 m). The center of gravity of the system of masses is
A. (10/7m, 8/7m, 11/7m). B. (11/7m, 7/7m, 8/7m). C. (7/7m, 10/7m, 11/7m). D. (10/7m, 7/7m, 8/7m). E. (8/7m, 7/7m, 10/7m).
When the frequency of the light is increased in a photoelectric effect experiment, the energy of the emitted electrons __________
Fill in the blank(s) with correct word
How many grams of water can be produced from the combination of 25.0 grams of hydrogen and 225 grams of oxygen?
A) 250 grams B) 225 grams C) 200 grams D) 25 grams