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On March 27, 2004, the United States successfully tested the hypersonic X-43A scramjet, which flew at Mach 7 (seven times the speed of sound) for 11.0 seconds. (A scramjet gets its oxygen directly from the air, rather than from fuel.)
1-At this rate, how many minutes would it take such a scramjet to carry passengers the approximately 5000 from San Francisco to New York? (Use 331 for the speed of sound in air.)
2-How many kilometers did the scramjet travel during its 11.0 second test?
Suppose that the separation between two speakers A and B is 4.40 m and the speakers are vibrating in-phase, What is the largest possible distance between speaker B and the observer,
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question an electron is near a positive ion of charge 9e and a negative ion of charge ?8e see the figure below. take a
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