A vertical tube one meter long is open at the top. It is filled with 75 cm of water. If the velocity of sound is 344 m/s, what will the fundamental resonant frequency be (in Hz)?
A. 3.4
B. 172
C. 344
D. 1.7
E. 688
Answer: C
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Which of the following characteristics describes silicate minerals?
-Silicate minerals contain only silicon. -Silicate minerals make up 8 percent of Earth's crust. -Silicate minerals contain calcite and dolomite. -Silicate minerals contain halite and gypsum. -Silicate minerals contain silicon and oxygen.
Once an alpha particle is outside the nucleus it is
A) free to wander about the surrounding material. B) quickly bound to a neighboring nucleus. C) electrostatically repelled. D) radioactive.
A 2.0-kg block sliding on a rough horizontal surface is attached to one end of a horizontal spring (k = 250 N/m) which has its other end fixed. The block passes through the equilibrium position with a speed of 2.6 m/s and first comes to rest at a displacement of 0.20 m from equilibrium. What is the coefficient of kinetic friction between the block and the horizontal surface?
a. 0.32 b. 0.45 c. 0.58 d. 0.19 e. 0.26
Atmospheric lifting resulting from the convergence of two different air masses is called
A) convectional lifting. B) orographic lifting. C) adiabatic lifting. D) frontal lifting.