A natural gas pipeline with a diameter 0.250 m delivers 1.55 cubic meters of gas per second. What is the flow speed of the gas in the pipeline?
31.6 m/s
Physics & Space Science
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Which type of binary gives information about the star sizes in addition to the combined masses?
A. eclipsing binary B. spectroscopic binary C. visual binary D. apparent binary E. astrometric binary
Physics & Space Science
An organ pipe open at both ends has a radius of 4.0 cm and a length of 6.0 m. What is the frequency (in Hz) of the third harmonic? (Assume the velocity of sound is 344 m/s.)
a. 76 b. 86 c. 54 d. 28 e. 129
Physics & Space Science
In a(n) _____________reaction, one solid ? phase transforms to two solids ? and ?.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
If the resultant force acting on a 2.0-kg object is equal to 
N, what is the change in kinetic energy as the object moves from 
m to 
/> m? A. +36 J B. +28 J C. +32 J D. +24 J E. +60 J
Physics & Space Science