In metals, at temperatures below half of the melting temperature, plastic strain is due to _________motion.
Fill in the blank(s) with the appropriate word(s).
dislocation
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The velocity of a longitudinal wave traveling in a liquid or a gas depends only on the density of the fluid
Indicate whether the statement is true or false
What do we think happened to the solar nebula after the planets formed?
a. The gas was all used up in planet formation. b. The rest of the gas gradually drifted away. c. The solar wind helped blow the gas away. d. The gas is still here; we just can’t see it.
If the distance between a point mass and the pivot point is tripled, the rotational inertia of the object about that point is multiplied by
A. 9 B. 3 C. 1/3 D. 1/9
The basic function of a carburetor of an automobile is to atomize the gasoline and mix it with air to promote rapid combustion. As an example, assume that 30 cm3 of gasoline is atomized into N spherical droplets, each with a radius of 2.0 × 10^?5 m. What is the total surface area of these N spherical droplets?