1.Set the person on the road a distance away from the sound source. Set the speed of the source to 200 m/s and run the simulation. What do you notice about the difference between the sound waves that hit the observer when the source is moving towards the observer versus when the source is moving away from the observer? (2 points)

i really need help

its based of a gizmo simulation

1. To determine the difference between the sound waves that hit the observer when the source is moving towards and away from the observer, you can conduct a simulation. Set the person on the road at a distance from the sound source. Set the speed of the source to 200 m/s and run the simulation. Observe the sound waves hitting the observer in both cases when the source is moving towards and away from the observer. Note any differences in the frequency or wavelength of the waves.

2. For this question, set the frequency of the sound wave to 1000 Hz. Set the speed of the source to 100 m/s and the speed of sound to 340 m/s. Place the observer a distance away from the source on the road. Play the simulation and use the Ruler tool to measure the distance between the wave fronts in front of the moving source and behind the source. Compare the two distances measured.

3. To calculate the different frequencies the observer will hear in question 2, you need to use the wave speed equation. The equation is: velocity = frequency × wavelength. In this case, the velocity is the speed of sound (340 m/s) and the frequency is the given frequency (1000 Hz). Rearrange the equation to solve for wavelength: wavelength = velocity / frequency. Plug in the values and calculate the wavelength. Then, use the wave speed equation again to calculate the frequency for both the front and back wave fronts.

4. To predict how the answers to question 2 and question 3 would change if the speed of sound wave was changed to 450 m/s, you need to understand the relationship between velocity, frequency, and wavelength. In the wave speed equation (velocity = frequency × wavelength), if the velocity increases, the wavelength also increases if the frequency remains constant. The frequency is inversely proportional to the wavelength. Therefore, if the speed of sound is increased to 450 m/s, the wavelength will increase, and this will affect the distances between the wave fronts measured in question 2 as well as the frequencies calculated in question 3.

5. Reset the experiment in question 2 and set the velocity of the sound to 450 m/s. Repeat the steps from question 2 and question 3. Compare the results obtained with the prediction made in question 4. Show all work including the measurements, calculations of wavelength, and frequencies for different distances.

6. Reset the experiment and place the object closer to the person on the road. Set the frequency of the sound to 500 Hz, the velocity of the source to 200 m/s, and the velocity of the sound to 340 m/s. Select the Circular Motion option and run the experiment. Observe the experience of the observer in terms of the frequency. Pay attention to any changes in the frequency as a result of the circular motion of the source.

7. When the source is rotating in a circle, the Doppler Effect seems to happen all around the observer. In other words, the observer experiences a change in frequency from any direction of the rotating source.

8. When the motion is set to Oscillation, the Doppler Effect occurs as the oscillating object moves towards or away from the observer. As the distance between the object and the observer changes, it affects the observed frequency of the oscillating waves.

9. The physical evidence that light has been Doppler shifted is the change in the color of the light observed by the observer. If the frequency of the light waves is shifted towards the red end of the spectrum, it indicates a red-shifted signal. Similarly, if the frequency is shifted towards the blue end of the spectrum, it indicates a blue-shifted signal. The change in color of the light wave is the evidence of the Doppler shift.

10. The red-shifting of almost all stellar objects relative to Earth indicates that these objects are moving away from us. According to the Doppler Effect, when an object moves away from an observer, the light waves get stretched, resulting in a decrease in frequency or a shift towards the red end of the spectrum. This indicates that the universe is expanding, as the majority of stellar objects show a red-shift, suggesting that they are moving away from us and from each other. This observation supports the theory of the Big Bang and the expanding universe.