Trumpeter A holds a B-flat note on the trumpet for a long time. Person C is running towards the trumpeter at a constant velocity
. Person B is running away from the trumpeter at the same rate. Person D is standing still the whole time. Which person hears a frequency that is lower than the B-flat?
Person B hears a note that is lower than a B-flat. This is because as the runner is going away from the stationary trumpeter, the sound waves become elongated, or stretched out. This increases the wavelength and decreases the frequency.
As Merrill watches his finger with both eyes open as he brings his finger closer to his nose, he feels his eye muscles working. This shows that her eyes Muscles have both accommodation and convergence.
Accommodation and convergence allows us to view objects both near and at far without double vision.
Displacement is a vector. This means it has a direction as well as a magnitude and is represented visually as an arrow that points from the initial position to the final position.
