Exam 20: Sound

Suppose you sound a 1056-hertz tuning fork at the same time you strike a note on the piano and hear 2 beats/second.You tighten the piano string very slightly and now hear 3 beats/second.What is the frequency of the piano string?

Sound travels faster in

An explosion occurs 34 km away.Since sound travels at 340 m/s,the time it takes for the sound to reach you is

When the speed of sound near the ground is greater than it is at higher altitudes,the sound tends to be bent

The natural frequency of an object depends on its

Double the frequency of a sound and you halve its

In designing a music hall,an acoustical engineer deals mainly with

In the case of radio,which has the higher frequency?

A dolphin perceives its environment by the sense of

A piano tuner knows that a key on the piano is tuned to the frequency of his tuning fork when he strikes them at the same time and the number of beats he hears each second is

Caruso is said to have made a crystal chandelier shatter with his voice.This is a demonstration of

A wave having a frequency of 1000 hertz vibrates at

When you tune a radio to a certain station,you match the frequency of the internal electrical circuit to the frequency of the wanted radio station.In so doing you are employing the principle of

A neon atom has a larger atomic number than a helium atom.At the same temperature and pressure,how does the speed of sound in helium gas compare to the speed of sound in neon gas?

Sound refraction depends on the fact that the speed of sound is