Fill in the letter of the choice that best answer the question. Giorgio connects the bottom of two cans with a string. Giorgio and a friend each take one of the cans and stand apart until the string is taut Placing the can to his ear, Giorgio can hear what his friend whispers into his can. How is the string being used in this activity? A. The string produces sOund waves. B. Sound waves move along the string C. Thermal energy is absorbed by the string. D. Light waves travel along the string between the cans.

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 $344\frac{m}{s}$.