Two vibrating tuning forks, held side by side, will create a beat frequency of what value if the individual frequencies of the two forks are 321 Hz and 326 Hz, respectively?
a. 323.5 Hz
c. 5 Hz
b. 647 Hz
d. 2.5 Hz
C
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The standard kilogram is a platinum-iridium cylinder 39 mm in height and 39 mm in diameter. What is the density of the material?
What will be an ideal response?
The word "radioactive" means
A. an atomic nucleus absorbs neutrons. B. there is significant interference between atomic radiation and radio reception. C. an atom spontaneously captures an electron from a neighboring atom. D. there are nuclei present which will spontaneously emit nuclear radiation.
A car is going around a racetrack at constant speed. The curves around the track have different radii. In which turn is the magnitude of the car's acceleration the greatest?
a. It is the greatest in the turn with the greatest radius. b. It is the greatest in the turn with the smallest radius. c. The acceleration is zero everywhere because of the constant speed. d. More information is needed to determine the answer.
What was deBroglie's revolutionary idea about atomic structure?
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