An open organ pipe is tuned to a given frequency. A second pipe with both ends open resonates with twice this frequency. What is the ratio of the length of the first pipe to the second pipe?
A) 1
B) 2
C) 4
D) .5
A
Physics & Space Science
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An object covers a distance of 8 meters in the first second of travel, another 8 meters during the next second, and 8 meters again during the third second. Its acceleration is
A) 0 m/s2. B) 5 m/s2. C) 8 m/s2. D) 24 m/s2.
Physics & Space Science
A 4000-? resistor is connected across 220 V. What current will flow?
A) 0.055 A B) 1.8 A C) 5.5 A D) 18 A E) 550 A
Physics & Space Science
The metric prefix for one thousand is
A) milli. B) centi. C) kilo. D) mega. E) giga.
Physics & Space Science
When there is a 14.0-A current through an 8.00-? device for 24.0 hours, how much does this cost if energy costs $0.0900 per kW ? h?
A) $0.24 B) $1.04 C) $2.16 D) $3.39
Physics & Space Science