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

Physics & Space Science

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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

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Once an alpha particle is outside the nucleus it is

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Atmospheric lifting resulting from the convergence of two different air masses is called

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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.

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