Star A has a temperature 3 times that of star B. Both star A and star B are the same physical size. Which statement about star A and star B below is correct?
A) Star A is redder and dimmer than star B.
B) Star A is bluer and dimmer than star B.
C) Star A is redder and brighter than star B.
D) Star A is bluer and brighter than star B.
E) Star A and star B have the same color, but star A is brighter.
D
You might also like to view...
Deep trenches in the ocean mark places where
A) one plate slides under another, returning older crust to the mantle. B) plates pull apart, leaving great rifts in the crust. C) hot mantle material rises upward and spreads sideways, pushing the plates apart. D) plates push together, creating ocean mountain chains. E) plates slip sideways relative to one another.
A nonrelativistic proton is confined to a length of 2.0 pm on the x-axis. What is the kinetic energy of the proton if its speed is equal to the minimum uncertainty possible in its speed? (1 eV = 1.60 × 10-19 J, h = 1
055 × 10-34 J ? s, mproton = 1.67 × 10-27 kg) A) 5200 eV B) 5.2 eV C) 520 eV D) 0.52 eV E) 52 eV
If the population of a country doubles every 25 years, a 1980 population of 10 million will reach 80 million in the year
a. 2005. b. 2030. c. 2055. d. 2080. e. 2105.
Holography was invented by
A. Max von Laue. B. Sir David Brewster. C. Rosalind Franklin. D. Dennis Gabor. E. Bill Gates.