Aluminum-lithium alloys were developed for aircraft applications because of their relatively high yield strength and low _________.
Fill in the blank(s) with the appropriate word(s).
density
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From the viewpoint of an alien astronomer, how does Jupiter affect observations of our Sun?
A) It causes the Sun to move in a small ellipse with an orbital period of about 12 years. B) It makes the Sun periodically get somewhat brighter. C) It makes the Sun appear dimmer when viewed with infrared light. D) It causes the Sun to move in a small ellipse in the sky, with the same ellipse repeated every night.
A wheel rotates through an angle of 320° as it slows down from 78.0 rpm to 22.8 rpm. What is the magnitude of the average angular acceleration of the wheel?
A) 2.34 r rad/s2 B) 5.48 rad/s2 C) 6.50 rad/s2 D) 8.35 rad/s2 E) 10.9 rad/s2
____________ is a satellite of Pluto
a. Miranda b. Charon c. Venus d. Krypton e. Nereid
A seed is 15 mm in front of a converging lens, and the image of the seed is 4.0 mm behind the lens. What is the focal length of the lens?
A) 11 mm B) 5.5 mm C) 3.8 mm D) 3.2 mm