The Tully-Fisher relation uses the rotational speed of the galaxy to measure its ________
Fill in the blank(s) with correct word
luminosity
You might also like to view...
Remanent magnetism is present in rocks that contain the mineral named
a. magnetite. b. quartz. c. hematite. d. calcite.
Sea breezes that occur near the shore are attributed to a difference between land and water with respect to what property?
a. mass density b. coefficient of volume expansion c. specific heat d. emissivity
A moderator is used in a nuclear reactor to
A. slow down the neutrons B. add more fuel C. produce more protons D. absorb neutrons
You are holding on to one end of a long string that is fastened to a rigid steel light pole. After producing a wave pulse that was 5 mm high and 4 cm wide, you want to produce a pulse that is 4 cm wide but 7 mm high. You must move your hand up and down once,
a. the same distance up as before, but take a shorter time. b. the same distance up as before, but take a longer time. c. a smaller distance up, but take a shorter time. d. a greater distance up, but take a longer time. e. a greater distance up, but take the same time.