Waves Flashcards
What is characteristic of both sound and electromagnetic waves
They transfer energy
Transverse waves are to radio waves as longitudinal waves are to
Sound waves
The diagram below represent two waves, A and B, traveling thru the same uniform medium. Which characteristic is the same for both waves?
Amplitude
A distance of 1.0x10^-2 meter separates successive crests of a periodic wave produced in a shallow tank of water. If a crest passes a point in the tank every 4.0x10^-1 second, what is the speed of this wave?
2.5x10^-2
As a monochromatic light ray passes from air into water, two characteristics of the ray that will not change are
Frequency and period
The wavelength of a wave doubles as it travels from medium A into medium B. Compared to the wave in Medium A, the wave in medium B has
Twice the speed
What is the period of a sound wave having a frequency of 340 hertz?
2.94x10^-3 s
A physics student takes her pulse and determines that her heart beats periodically 60 times in 60 seconds. The period of her heartbeat is
1s
The diagram below represents a periodic wave. Which two points on the wave are out of phase?
D and G
The diagram below represents a periodic wave. Which two points on the wave are 180.D out of phase?
A and C
Sound waves are produced by the horn of a truck that is approaching a stationary observer, compared to the sound waves detected by the driver of the truck, the sound waves detected by the observer have a greater
Frequency
As a car approaches a pedestrian crossing the road, the driver blows the horn. Compared to the sound wave emitted by the horn, the sound wave detected by the pedestrian has a
a higher frequency and higher pitch
In the diagram below, a stationary source located at point S produces sound having a constant frequency of 512 hertz. Observe A, 50.meters to the left of S, hears a frequency of 512 hertz. Observer B, 100 meters to the right of S, bears a frequency of 512 hertz. Which statement best describes the motion of the observer?
Observer A is stationary, and observer B is moving away from point S
The diagram below represents
S