The distance between the first and fifth nodes in a standing wave is 40.0 cm. If the waves travel at 2.50 m/s, What is the frequency of the waves?
25Hz
12.5Hz
125Hz
20Hz
A sound wave is a mechanical wave, not an electromagnetic wave. Why?
Particles of the medium move perpendicular to the direction of energy transport.
A sound wave transports its energy through a vacuum.
Particles of the medium regularly and repeatedly oscillate about their rest position.
A medium is required in order for sound waves to transport energy
What is called the persistence of audible sound due to the successive reflections from the surrounding objects even after the source has stopped to produce that sound?
Reflection
Echo
Reverberation
Rarefaction
In which direction will the particles move, If a transverse wave is a transporting energy from east to west?
East to west only
Both eastward and westward
North to south only
Both northward and southward
An FM radio station instructs your radio receiver how to move its speaker cone by varying the.
Amount of electric charge it pushes up and down its antenna.
Amplitude of the radio wave it produces.
Strength of the electric and magnetic fields in the radio wave it produces.
Frequency of the radio wave it produces.
The frequency of a wave travelling at a speed of 500 m/s is 25Hz. What is its time period?
20 s
0.05 s
25 s
0.04 s
The study of waves applies to what other subject?
Lightning
Chemistry
Sound
Mathematics
What do the air particles , when the sound travels through air?
Vibrate along the direction of wave propagation
Vibrate but not in any fixed direction
Vibrate perpendicular to the direction of wave propagation
Do not vibrate
Which of the following will remain unchanged when a sound wave travels in air or in water?
Frequency
Wavelength and frequency
Speed and frequency
Amplitude
What is the amplitude of thunder?
Loudness
Pulses do not have amplitude
