The Tully-Fisher relation uses the rotational speed of the galaxy to measure its ________

Fill in the blank(s) with correct word


luminosity

Physics & Space Science

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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

Physics & Space Science

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

Physics & Space Science

Remanent magnetism is present in rocks that contain the mineral named

a. magnetite. b. quartz. c. hematite. d. calcite.

Physics & Space Science

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.

Physics & Space Science