Approximately how fast is a person located at the Earth's equator traveling due to the rotation of the Earth?
A) 1,700 km/hr
B) 17 km/hr
C) 17,000 km/hr
D) 170 km/hr
E) not moving at all
A
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A(n) ____________________ supernova is caused by the collapse of a massive star that has lost its outer envelope of hydrogen
Fill in the blank(s) with correct word
Which element has the lowest mass per nuclear particle and therefore cannot release energy by either fusion or fission?
A) hydrogen B) iron C) oxygen D) silicon
Almost every action performed by a living cell is carried out by:
A) physical forces within each cell. B) chemicals it manufactures. C) gravitational forces within each cell. D) electric impulses transmitted by each cell.
To produce an "A" note (440. Hz) at 20.°C, a saxophone must create how long an effective air column?
A) 78. cm B) 39. cm C) 20. cm D) 66. cm E) 59. cm