What angular speed (in revolutions/second) is needed for a centrifuge to produce an acceleration of 1 000 g at a radius arm of 15.0 cm?
a. 40.7 rev/s
b. 75.4 rev/s
c. 81.4 rev/s
d. 151 rev/s
a
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The resultant force vector R (in newtons) is:
Bracket ADO is acted on by forces F and T and couple M (see figure). Assume that F 5 8 N, T 5 9 N and
M 5 12 N?m. Joint coordinates are in meters.
(A) 25i 1 7j 1 1k
(B) 23i 1 4j 2 3k
(C) 26i 1 5j 1 4k
(D) 23i 1 6j 1 2k
Longitude can be defined as the angular measurement, in degrees, east or west of the ______________ meridian
Fill in the blank(s) with correct word
While both Ptolemy and Copernicus assumed all orbits were ________, Kepler's first law corrected this and made planetary motion predictable
Fill in the blank(s) with correct word
An ammonia molecule is
a. pyramidal and polar. b. pyramidal and nonpolar. c. flat and polar. d. flat and nonpolar.