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.
Answer: D
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Extrasolar planets are placed in groups by their approximate masses. What are four of these classes?
What will be an ideal response?
Two glass plates, each with an index of refraction of 1.55, are separated by a small distance D. The space between the plates is filled with water (n = 1.33) as shown. What is the minimum thickness of D that will cause the reflected light appear green? Note: The wavelength of green light is 460 nm in vacuum.
The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III
?
The object’s speed is greatest in region I.
a.
True
b.
False