He discovered that the orbits of planets are ellipses
A) Kepler B) Ptolemy C) Galileo D) Tycho Brahe E) Copernicus
A
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In stainless steel, nickel and chromium atoms form a _____________solid solution in iron.
Fill in the blank(s) with the appropriate word(s).
How many orders are in the spectra formed by a grating with 3000. lines/cm illuminated by red light of wavelength 600. nm?
A) 1 B) 5 C) 0 D) 4 E) 3
Main sequence stars have radii ranging from about 0.03 solar radius to 30 solar radius
Indicate whether the statement is true or false
Four unequal resistors are connected in a parallel with each other. Which one of the following statements is correct about this combination?
A) The equivalent resistance is less than that of the smallest resistor. B) The equivalent resistance is equal to the average of the four resistances. C) The equivalent resistance is midway between the largest and smallest resistance. D) The equivalent resistance is more than the largest resistance. E) None of the other choices is correct.