Course Chapter Fourteen(14) Lab Activity
Name: _______________________________________________________________________
DETAILED INSTRUCTIONS FOR LAB ACTIVITY COMPLETION: This is your lab activity for the course chapter fourteen (14). Therefore, the first step is to visit the following webpage: https://phet.colorado.edu/en/simulation/legacy/sound
The purpose of this page is to provide you with the resource to complete this lab activity.
This lab activity has two (2) sections. The purpose of each of these two (2) sections is to provide you with an opportunity to learn the principles of physics and apply them to solve relevant problems. Upon completion of these two (2) sections, you will be better prepared to tackle future lab quizzes and the examinations in this course (the midterm examination and the final examination). Section 1 requires you to produce a lab report and the section 2 requires you to answer questions.
The second step is to scroll down to each of the two (2) sections and follow the instructions given in each section. Once you have completed each of the sections, move onto the third step.
The third step is to ensure that you have completed all the relevant questions and sections for this lab activity, and then submit your work to the dropboxwithin the course.OBJECTIVES:
| Objectives | |
| At the end of this lab activity, the student should be able to à | Solve problems involving sound and sound waves.
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| At the end of this lab activity, the student should be able to à | Devise experiments and write satisfactory laboratory reports.
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SECTION ONE (1) –
INSTRUCTIONS FOR COMPLETING SECTION ONE (1):
- Click on “Run Now” within the simulation. The link to the simulation was provided in the “DETAILED DIRECTIONS FOR LAB ACTIVITY COMPLETION.”
- Run the simulation.
- Use the simulation to develop the laboratory report.
- 4. Ensure that you have completed the lab report, and then move to “Section Two (2).”
DIRECTIONS TO DEVELOP LAB REPORT:
- For this section, you must write a laboratory report to test the Doppler Effect.Use the simulation to conduct your experiment and gather data for this section.
- Follow the general outline of a lab report as provided in the link below:
http://www.utm.edu/staff/cerkal/report.html
- Remember to show your calculations.
These laboratory reports will prepare you to do well in future lab activities and in the project.
* You only need to submit a comprehensive lab report for the section one (1). If you have any questions regarding the answers to those questions, you may contact the professor.
Section Two (2):
INSTRUCTIONS FOR COMPLETING SECTION TWO (2):
Answer the following questions and submit the work to the dropbox with the laboratory report.
(a)An experimenter wishes to generate in air a sound wave that has a displacement amplitude of 6.20 10-6 m. The pressure amplitude is to be limited to0.850 Pa. What is the minimum wavelength the sound wave can have? (Take the equilibrium density of air to be ρ = 1.20 kg/m3 and assume the speed of sound in air is v = 343 m/s
(b) Calculate the pressure amplitude of a 2.80 kHz sound wave in air, assuming that the displacement amplitude is equal to 2.00 ✕ 10-8 m.
[Note: Use the following values, as needed. The equilibrium density of air is ρ = 1.20 kg/m3. The speed of sound in air is v = 343 m/s. Pressure variations ΔP are measured relative to atmospheric pressure, 1.013 ✕ 105 Pa.]
(c) Earthquakes at fault lines in Earth’s crust create seismic waves, which are longitudinal (P-waves) or transverse (S-waves). The P-waves have a speed of about 9 km/s. Estimate the average bulk modulus of Earth’s crust given that the density of rock is about 2500 kg/m3.
Submit Section One (1) and Section Two (2) to the relevant dropbox within the course.
IMPORTANT NOTE: If you have any questions, please email your professor.