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 primary coil of an ideal transformer has 100 turns and its secondary coil has 400 turns. If the ac current in the secondary coil is 2 A, what is the current in its primary coil?
A) 2 A B) 8 A C) 1/2 A D) 1/4 A E) 4 A
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
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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?
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