The surface of a sample for observation in an SEM must be a(n) _________.
Fill in the blank(s) with the appropriate word(s).
conductor
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Constant Angular Acceleration: An old 78 rpm record rotates through an angle of 320° as it slows down uniformly from 78.0 rpm to 22.8 rpm. What is the magnitude of the angular acceleration of the record?
A. 2.34 rad/s2 B. 5.46 rad/s2 C. 6.50 rad/s2 D. 8.35 rad/s2 E. 10.9 rad/s2
Determine the shape factor F1–4 for the geometrical configuration shown below.
GIVEN
Geometrical configurations shown above
FIND
The shape factor F1–4
Astronaut Mark Uri is space-traveling from planet X to planet Y at a speed of relative to the planets, which are at rest relative to each other
When he is precisely halfway between the planets, a distance of 1.0 light-hour from each one as measured in the planet frame, nuclear devices are detonated on both planets. The explosions are simultaneous in Mark's frame. What is the difference in the time of arrival of the flashes from the explosions as observed by Mark? A) 0 min B) 180 min C) 90 min D) 360 min E) 113 min
Ansel places an object 34.8 cm from a thin convex lens along the axis. If a real image forms at a distance of 13.2 cm from the lens, what is the focal length of the lens?
a. 34.8 cm b. 21.3 cm c. 13.2 cm d. 9.57 cm e. 21.6 cm