A 3 kg block, initially moving due east at 6 m/s, is acted upon by an impulse having magnitude 6 Ns and direction due west. The final velocity of the block is
A. 4 m/s east.
B. 4 m/s west.
C. 8 m/s west.
D. 8 m/s east.
Answer: A
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The Garfield Thomas water tunnel at Pennsylvania State University has a circular cross-section that constricts from a diameter of 3.6 m to the test section, which is 1.2 m in diameter. If the speed of flow is 2.0 m/s in the large-diameter pipe, determine the speed of flow in the test section
a. 9.0 m/s c. 27 m/s b. 18 m/s d. 1.0 m/s
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Which best describes the image of a concave mirror when the object is located somewhere between the focal point and twice the focal point distance from the mirror?
a. virtual, upright, and magnification greater than one b. virtual, upright, and magnification less than one c. real, inverted, and magnification greater than one d. real, inverted, and magnification less than one
A habitable zone
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