What characteristics of a sound wave are related to the "pitch" of a musical note? (There could be more than one correct choice.)
A) amplitude
B) wavelength
C) frequency
D) period
B, C, D
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Two spheres are cut from a certain uniform rock. One has radius 4.50 cm. The mass of the other is five times greater.
Find its radius.
Wave interference occurs for
A) sound waves. B) light waves. C) water waves. D) all of the above E) none of the above
Observations of the cosmic background radiation from the COBE satellite revealed tiny variations in its temperature from one place to another (corresponding to a few millionths of a degree Kelvin)
Indicate whether the statement is true or false
In a velocity selector having electric field E and magnetic field B, the velocity selected for positively charged particles is v = E/B. The formula is the same for a negatively charged particles
Indicate whether the statement is true or false