Physics

1A tuning fork of frequency 256 Hz gives the first resonance in a closed tube. Taking v = 340 m/s and neglecting end correction, find the length of the air column.

2Bats use ultrasound to locate objects.

3The echo from a wall returns after 6 s. If sound travels at 340 m/s, the wall is ___ m away.

4A louder sound has a higher frequency.

5The audible frequency range for humans is about

6For a closed pipe (resonance tube), the first resonance occurs at a length of about

7A tuning fork of frequency 480 Hz gives the first resonance in a closed tube. Taking v = 340 m/s and neglecting end correction, find the length of the air column.

8Two tuning forks of 256 Hz and 260 Hz are sounded together. What is the beat frequency?

9The speed of sound in air increases with temperature.

10A boy hears the echo of his shout from a cliff 495 m away. If sound travels at 330 m/s, how long after shouting does he hear the echo?