The logarithm of the ratio of the initial cross-sectional area to the area at the location of fracture of a specimen is equal to the _____________ to fracture.
Fill in the blank(s) with the appropriate word(s).
true strain
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A point on the rim of a 0.25-m radius fan blade has centripetal acceleration of 0.20 m/s2 . Find the centripetal acceleration of a point 0.1 m from the center of the same wheel
a. 0.01 m/s2 c. 0.04 m/s2 b. 0.02 m/s2 d. 0.08 m/s2
Hoe can you determine your latitude if you live anywhere above the equator
a) Your latitude will be approximately equal to the angular separation of the pointer stars in the Big Dipper b) Your latitude will be approximately the angular separation of the Sun and the Moon c) Your latitude will approximately the altitude of Polaris
A centrifuge rotates at 100 rev/s (i.e., 628 rad/s). If the test tube places the suspension at 10 cm from the axis of rotation, by what factor are the terminal speeds of the settling particles increased as compared to sedimentation cause by gravity?
a. 3.2 × 10^3 c. 800 b. 64 d. 4.0 × 10^4
Unlike the refracting astronomical telescope discussed in the text that gives an inverted image, Galileo's telescope produced an upright image. What did he do differently to accomplish this?
a. He rotated the barrel of the telescope 180°. b. He used diverging lenses for both the eyepiece and the objective. c. He used a diverging lens for the eyepiece. d. He used a diverging lens for the objective.