Which is the correct description for the Sun's location in the Galaxy?
A) At the outer edge of the bulge, but along the Galactic equator
B) About 30,000 ly out in the halo
C) At the very outer edge of the disk, but in the Galactic plane
D) In the disk near the Galactic center
E) In the disk, and about half way out from the center
E
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Saturn's F ring and the rings of Uranus are similar in that
a. they are made of dark material. b. they are made of icy material. c. they are found near large moons. d. they show well defined spokes. e. they are very narrow.
An airplane with an airspeed of 140 km/h has a heading of 50° west of north in a wind that is blowing toward the east at 25 km/h. What is the groundspeed of the plane?
What will be an ideal response?
Reactance: The capacitive reactance of a 44-?F capacitor in an ac circuit is 6.0 × 10-2 ?. What is the frequency of the applied signal?
A. 80 Hz B. 17 Hz C. 800 Hz D. 6.0 Hz E. 2.2 Hz
Newton's Second Law in 2 Dimensions: A 50.0-kg crate is being pulled along a horizontal smooth surface. The pulling force is 10.0 N and is directed 20.0° above the horizontal. What is the magnitude of the acceleration of the crate?
A. 0.0684 m/s2 B. 0.188 m/s2 C. 0.200 m/s2 D. 0.376 m/s2 E. 0.0728 m/s2