Which of the following statements best describes the size of the largest asteroid, Ceres?

A) It is about the size of a terrestrial planet.
B) It is smaller than the jovian planets but larger than the terrestrial planets.
C) It is a little less than half the diameter of our Moon.
D) It is no larger than a typical mountain on one of the terrestrial planets.


C

Physics & Space Science

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A cell's DNA molecules are constructed of

a. amino acids. b. proteins. c. sugars, phosphates, and bases. d. all of the above e. none of the above

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The wavelengths corresponding to the harmonics of a string with fixed ends can be found by saying that the length of the string must be equal to

A) an odd number of quarter-wavelengths. B) an odd number of third-wavelengths. C) an odd number of half-wavelengths. D) an integer number of half-wavelengths. E) an integer number of wavelengths.

Physics & Space Science

The Hertzsprung-Russell Diagram plots ________ against the spectral type or temperature

A) distance B) luminosity or absolute magnitude C) brightness or apparent magnitude D) size or density E) mass

Physics & Space Science

Which star is the furthest away if all have the same apparent brightness?

a) type G main sequence star b) type F main sequence star c) type M main sequence star d) type A main sequence star e) white dwarf

Physics & Space Science