The fact that the Voyager spacecraft continues to travel out of the solar system, even though its rockets have no fuel, is an example of
A) Newton's first law of motion.
B) Newton's second law of motion.
C) Newton's third law of motion.
D) the universal law of gravitation.
E) none of the above.
A
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Which of the following statements best describes the idea behind the Gas Chromatograph/Mass Spectrometer Experiment on board the Viking landers?
A) soil with living organisms in it should contain organic molecules B) radioactive gases should be produced when radioactive nutrients are added to a soil sample C) living organisms in the soil should incorporate carbon from atmospheric gases D) living organisms in the soil should give off gases when they metabolize nutrients
What is the shortest wavelength in the Paschen series?
A) 410.2 ?m B) 365 nm C) 820.4 nm D) 410.2 nm E) 820.4 ?m
In which system is heat usually transferred from the cooler part to the warmer part?
a. a stove as it heats up water b. a refrigerator that is running c. an electric fan that is running d. none of the above, because it is impossible to transfer heat in this manner
Magnifying Glass With the Image at the Near Point of the Eye: A person with normal eyesight uses a converging lens of focal length 10 cm as a magnifying glass to finish an engraving job. To see detail, he holds the lens very close to his eyes. What is the maximum angular magnification of the lens under these circumstances?
A. 3.5 B. 4.5 C. 6.5 D. 7.5 E. 8.5