Superalloys that are dispersion-strengthened with an oxide must be produced by _________metallurgy techniques.
Fill in the blank(s) with the appropriate word(s).
powder
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Above about 80 km, the Sun's radiation ionizes the gases. What is this part of Earth's atmosphere called?
A) The troposphere B) The stratosphere C) The mesosphere D) The ionosphere E) The magnetosphere
An object is placed 10 cm to the left of a converging spherical lens. The lens has a focal length of f = 5 cm. Where is the image formed?
a. 3.3 cm to the left of the lens b. 3.3 cm to the right of the lens c. 10 cm to the left of the lens d. 10 cm to the right of the lens
A push on a 1-kg brick accelerates it. Neglecting friction, equally accelerating a 10-kg brick requires
A) just as much force. B) 10 times as much force. C) 100 times as much force. D) one-tenth the amount of force. E) none of the above
A turntable has a moment of inertia of 3.00 × 10^-2 kg•m2 and spins freely on a frictionless bearing at 25.0 rev/min. A 0.600-kg ball of putty is dropped vertically on the turntable and sticks at a point 0.100 m from the center. By what factor does the angular momentum of the system change after the putty is dropped onto the turntable?
a. 1.22 c. 0.820 b. 1.00 (no change) d. 1.20