3/27 Physics update and homework due 4/3

Hi folks,


Today in class we took the time to get to know waves up close and personal. After taking a bit of time to review and deepen some of the concepts we've been working on, we took the time to create our own waves using ropes. We found out what frequencies we had to meet to create several different harmonics for the ropes.


For homework this week answer the following questions regarding today's lab.


1. What did you do to find the frequency?




2. All waves begin with a vibrating particle, what was the vibrating particle in this wave?




3. Did you feel that the frequency had to be fairly specific or could multiple frequencies create the harmonics?




4. As the number of harmonics got higher, what happened to the frequency?




5. As the number of harmonics got higher, what happened to the wavelength?




6. Draw a picture of the first, second, third and forth harmonic. Mark the wavelengths, the nodes and the anti-nodes. How many many waves, nodes and anti-nodes are there in each picture?




7. If your lab partners were standing 5m apart from each other:


a. What was the wavelength of the first harmonic?



b. What was the wavelength of the second harmonic?



c. What was the wavelength of the third harmonic?



d. What was the wavelength of the fourth harmonic?



8. We didn't measure amplitude, but what would we have measured if we wanted to find the amplitude of the wave?



9. Did amplitude have any effect on frequency or wavelength?



10. What is the speed of the rope wave was dependent on? Frequency? Wavelength? Amplitude? Coffee intake? Something else (if so, what else)?



11. Using your data, find the speed of the rope wave for each harmonic. Do they match? Should they match?