The existence of Uranus was predicted by the application of Newton's laws of motion and gravity
a. True
b. False
Indicate whether the statement is true or false
False
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What does the equivalent of an H-R diagram for galaxies, plotting luminosity versus color, show?
A) galaxies fill the diagram showing that there is no correlation between luminosity and color B) two clumps, one blue with relatively low luminosity, one red with relatively high luminosity, and a valley in between with few galaxies C) a continuum from faint, blue galaxies to bright, red galaxies D) a continuum from faint, red galaxies to bright, blue galaxies E) a main sequence, just as for stars
The gas in a perfectly insulated system does work at a rate of 13 W. At what rate is the internal (thermal) energy of the gas changing?
A) -13 W B) 13 W C) 0.00 W D) 6.5 W
A possible means for making an airplane radar-invisible is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 6.00 cm, and the index of refraction of the polymer is n = 1.68, how thick would the coating be if a 180° phase change occurs at both surfaces?
a. 17.9 mm b. 35.7 mm c. 8.93 mm d. 4.46 mm e. 25.2 mm
Stern and Gerlach performed an experiment that showed the space quantization of silver atoms in an inhomogeneous magnetic field. Their experiment demonstrated that