Which of the following elements will most likely form an ion with a +2 charge?
A) Na
B) Mg
C) Ne
D) Si
E) Cl
Answer: B
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What will be an ideal response?
Reports are that singer Caruso was able to shatter a crystal chandelier with his voice, which illustrates
A) an echo. B) sound refraction. C) beats. D) resonance. E) interference.
A 40.0 cm long organ pipe is filled with air and is open at both ends. The velocity of sound in air at 0
is 331 m/s. If the temperature of the air decreases by 10
then what is the frequency of the fundamental mode?
A. 394 Hz B. 406 Hz C. 462 Hz D. 506 Hz E. 544 Hz
Which two quantities need to be measured in order to determine the density of an extrasolar planet?
A) mass and composition B) orbital period and mass C) radius and orbital period D) radius and composition E) mass and radius