Which one of the following statements is true? a. A dog whistle isn’t loud enough for humans to hear. b. The speed of a pulse sent up a rope hanging from the ceiling will decrease as the pulse rises. c. A wave hitting a fixed boundary is not inverted upon reflection. d. A seismic P-wave can propagate all the way through the earth.
- Which one of the following statements is true?
|
a. |
A dog whistle isn’t loud enough for humans to hear. |
|
|
b. |
The speed of a pulse sent up a rope hanging from the ceiling will decrease as the pulse rises. |
|
|
c. |
A wave hitting a fixed boundary is not inverted upon reflection. |
|
|
d. |
A seismic P-wave can propagate all the way through the earth. |
2. The oscillatory motion of a simple pendulum is represented by… θ(t) = (0.15rad)cos(2.56t)
Which one of the following is closest to the length of the pendulum?
|
a. |
0.15 m |
|
|
b. |
0.25 m |
|
|
c. |
1.5 m |
|
|
d. |
6.4 m |
3. Which one of the following is not an example of resonance?
|
a. |
2 tuning forks together produce sound that fluctuates in loudness |
|
|
b. |
a wine glass is shattered by singing a certain pitch |
|
|
c. |
a child is pushed on a swing to greater and greater height |
|
|
d. |
the larger than average tides in the Bay of Fundy |
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
