| 1 |
An open pipe will resonate if its length is(A) ¼ l
(B) ½ l
(C) 3(¼) l
(D) 5(¼) l
|
| 2 |
If the amplitude of a wave is tripled, its energy is increased by a factor of
|
| 3 |
Chimes are often made of open-ended and closed-ended pipes. Which chime will produce
the highest frequency?(A) closed pipe, 1 meter long
(B) open pipe, 1 meter long
(C) closed pipe, ½ meters long
(D) open pipe, ½ meters long
|
| 4 |
The range of human hearing for most people is from 20 hz to(A) 200 hz
(B) 160 hz
(C) 1600 hz
(D) 20000 hz
|
| 5 |
If the fundamental frequency of a closed pipe is 200 hz, the frequency of its first
overtone will be(A) 100 hz
(B) 400 hz
(C) 600 hz
(D) 800 hz
|
| 6 |
A tuning fork with a frequency of 440 hz produced resonances in an air column when the
water level was at 19.8 cm, 59.3 cm, and 99 cm.
Calculate the speed of sound.
|
| 7 |
A 80 cm steel rod is clamped at its center. One end, with a vibrating disk, is
inserted into a glass tube. As the disk vibrates the air column in the tube, piles
of cork dust are spaced at 9 cm intervals. If the speed of sound in air is 346
m/sec, what is the speed of sound in steel?
|
