When a major earthquake occurs, there is a ring around Earth's surface between 102^o and 143^o from the epicenter where P-waves are absent Why are P-waves waves not detected in this area? (1) P-waves are bent and reflected away from this region. (2) P-waves can pass through a solid, but not a liquid. (3) This zone is too far from the epicenter to record seismic waves. (4) Seismic waves cannot travel through Earth's interior.

A person is sitting $200m$ away from a $20hertz$ sound source. What is the time interval at which successive compressions pulses from the source reach him?

Sound waves with frequency smaller than 20 Hz are called:
ultrasound
infrasound
nanosound
minisound

Why is momentum conserved?

What type of wave travels slower through gases than it does through solids?

Which of the following is an example of longitudinal wave?

What are the properties of sound waves?

What are some examples of resonance.

If the amplitude of a sound in doubled, then the loudness increases:
A)Remains same
B)Increases three times
C)Increases four time
D)Increases two times

1 db is equal to how many hertz?

How do sound waves travel in air medium?

What is the period of the Great Clock's, Big Ben, pendulum.

Sound waves with a frequency of 20 Hz to 20,000 Hz are called_______. A. Audible sounds B. Inaudible sounds C. Infrasonics D.Ultrasonics

Do all EM waves travel at same speed?

What is the wavelength of light (nm) that has a frequency $4.62\times {10}^{14}{s}^{-<!--\; -\; -->1}$?
A. $932$
B. $649$
C. $1.54\times {10}^{-<!--\; -\; -->3}$
D. $1.07\times {10}^6$

A person has a hearing range from $20Hz$ to $20kHz$. What are the typical wavelengths of sound waves in air corresponding to these two frequencies? Take the speed of sound in air as $344\frac{m}{s}$.