The superposition of two waves
?
and
?
at the location x = 0 in space results in
A. beats at a beat frequency of 3 Hz.
B. a pure tone at a frequency of 153 Hz.
C. a pure tone at a frequency of 156 Hz.
D. beats at a beat frequency of 6 Hz.
E. beats at a frequency of 156 Hz.
Answer: D
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Red light with a wavelength of 650. nm travels from air into a liquid with an index of 1.33. What is the frequency and wavelength in the liquid?
What will be an ideal response?
An iceboat is traveling in a circle on the ice. Halfway around the circle the sail and the steering mechanism fall off the boat. Which statement is correct?
a. The boat will continue traveling in the circle because there is no friction. b. The boat will continue to travel in the circle because its velocity exerts a force on it. c. The boat will move off on a line tangent to the circle because there is no force on it. d. The boat will move off tangent to the circle because there is a force on it perpendicular to the boat directed to the outside of the circle. e. The boat will move off to the outside perpendicular to the tangent line since a force directed to the outside of the circle always acts on the boat.
The oldest objects found so far in our solar system are Earth rocks that are 1 billion years old
a. True b. False Indicate whether the statement is true or false
One phenomenon or experiment that supports the wave theory of matter is
A) the Michelson-Morley experiment. B) the tiny flashes that are observed when a light beam strikes a screen. C) interference effects with light. D) the tiny flashes that are observed when an electron beam strikes a screen. E) the double-slit experiment with electrons.