Since the frequency of sound in a medium is constant, therefore, the concert-goers would hear the low notes and high notes at the same time.
<h3>What is a dispersive medium?</h3>
A dispersive medium is a medium which spreads out or disperses a substance passing through it.
Since CO2 is a dispersive medium, it means sound waves passing through it would be dispersed based on wavelength.
The note of a sound depends on its frequency, the higher the frequency, the higher the note.
Frequency of sound is constant, therefore, the concert-goers would hear the low notes and high notes at the same time.
Learn more about dispersion of sound at: brainly.com/question/781734
Good morning.
We have:
![\mathsf{\overset{\to}{a} = 29\overset{\to}{j}}](https://tex.z-dn.net/?f=%5Cmathsf%7B%5Coverset%7B%5Cto%7D%7Ba%7D%20%3D%2029%5Coverset%7B%5Cto%7D%7Bj%7D%7D)
Where
j is the unitary vector in the direction of the
y-axis.
We have that
![\mathsf{\overset{\to}{a}+\overset{\to}{b} = -18\overset{\to}{j}}](https://tex.z-dn.net/?f=%5Cmathsf%7B%5Coverset%7B%5Cto%7D%7Ba%7D%2B%5Coverset%7B%5Cto%7D%7Bb%7D%20%3D%20-18%5Coverset%7B%5Cto%7D%7Bj%7D%7D)
We add the vector
-a to both sides:
![\mathsf{\overset{\to}{b} = -18\overset{\to}{j} -\overset{\to}{a} = -18\overset{\to}{j} -29\overset{\to}{j}}\\ \\ \mathsf{\overset{\to}{b}=-47\overset{\to}{j}}](https://tex.z-dn.net/?f=%5Cmathsf%7B%5Coverset%7B%5Cto%7D%7Bb%7D%20%3D%20-18%5Coverset%7B%5Cto%7D%7Bj%7D%20-%5Coverset%7B%5Cto%7D%7Ba%7D%20%3D%20-18%5Coverset%7B%5Cto%7D%7Bj%7D%20-29%5Coverset%7B%5Cto%7D%7Bj%7D%7D%5C%5C%20%5C%5C%20%5Cmathsf%7B%5Coverset%7B%5Cto%7D%7Bb%7D%3D-47%5Coverset%7B%5Cto%7D%7Bj%7D%7D)
Therefore, the magnitude of
b is
47 units.
Answer:
acceleration...............
When you rub a balloon on a sweater, for example, some electrons come off and end up on the balloon. The fibers have lost electrons giving them a positive charge. The rubber gained electrons giving it a negative charge. ... The positively charged fibers are now attracted to the negatively charged balloon.