Ordinary matter is made from what generation quarks?
A. 1st
B. 2nd
C. 3rd
D. 1st and 2nd
E. 1st, 2nd, and 3rd
A. 1st
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On a clear night you go outside and face south and see circumpolar stars. Then you turn and face north and you see stars rising in the east and setting in the west. Where are you located on Earth?
a. equator b. a mid-latitude between the equator and the north pole c. south pole d. a mid-latitude between the equator and the south pole
The _______________ temperature scale is used in astronomy because it is based on absolute zero
Fill in the blank(s) with correct word
A 160 lb person has a mass of 160/32 = 5 slugs. A 160-lb person steps into an elevator and stands on a bathroom scale. Determine the scale reading for the given scenarios. After moving downwards at constant speed, the elevator is slowing down at 2 m/s2 as it is coming to rest
a. 150 lb b. 160 lb c. 170 lb d. none of the above
Of all the planets, only ________ has surface features easily seen from Earth with ground-based telescopes
Fill in the blank(s) with correct word