1. No Question of the Day today Mar 7 Today’s Activities -Start Ch 11 and 12 with SHM Notes -Practice Problems Homework: AP Practice Problems due Thursday SHM Quiz on March 16 Ch 8 Test Make up for Absences: Tomorrow afterschool or any day THIS week before school.

2. Get a computer, plug it in, log in Then, sit down for a question of the day Ch 8 Test Make up for Absences: Today afterschool or any day THIS week before school.

3. Mar 8 Today’s Activities -Practice Problems 11-6 -PHET Masses and Springs Homework: Masses and Springs due tomorrow AP Practice Problems due Thursday SHM Quiz on March 16 Question of the Day #49 11-6. A spider of mass 0.30g waits in its web of negligible mass. A slight movement causes the web to vibrate with a frequency of 15Hz. a) Find the period of the web. b) Find the stiffness, k of the web. c) What is the period and frequency of the web if there is a 0.10g fly trapped in the web in addition to the spider?

4. Mar 9 Today’s Activities -Damping and Resonance Notes -PHET #11 -AP Practice Problems Homework: AP Practice Problems due tomorrow SHM Quiz on March 16 No Question of the Day today

5. Question of the Day #50 11-9. A geologist uses a simple pendulum that has a length of 37.10cm and a frequency of 0.8190Hz at a particular location on Earth. What is the acceleration due to gravity at this location? Mar 10 Today’s Activities -Pendulum lab Homework: None SHM Quiz on March 16Ch 8 Test Corrections will be allowed to raise scores up to 75% - see me for the details

6. No Question of the Day today Mar 14 Today’s Activities -Correct practice questions -Finish Pendulum lab Homework: Lab due Thursday SHM Quiz on Wednesday Quiz Study Guide - You must be able to -Identify the equilibrium position and amplitude for mass/spring systems and pendulums. -Understand and utilize the difference between A and x. -Understand where kinetic energy and potential energy are maximized/minimized in mass/spring systems and pendulums and how to find the total energy. Be able to calculate KE and PE at different points along the path of motion. -Calculate period, frequency and length for pendulums. -Perform calculations using Hooke's Law (F=kx). -Calculate period, frequency, spring constant and position x (x=Acos(2pift)) for spring/mass systems. -Understand and provide examples of real life situations of simple harmonic motion, underdamping, critical damping, overdamping, and resonance. -Interpret graphs showing simple harmonic motion, underdamping, critical damping, overdamping, and resonance.

7. Quiz Study Guide - You must be able to -Identify the equilibrium position and amplitude for mass/spring systems and pendulums. -Understand and utilize the difference between A and x. -Understand where kinetic energy and potential energy are maximized/minimized in mass/spring systems and pendulums and how to find the total energy. Be able to calculate KE and PE at different points along the path of motion. -Calculate period, frequency and length for pendulums. -Perform calculations using Hooke's Law (F=kx). -Calculate period, frequency, spring constant and position x (x=Acos(2pift)) for spring/mass systems. -Understand and provide examples of real life situations of simple harmonic motion, underdamping, critical damping, overdamping, and resonance. -Interpret graphs showing simple harmonic motion, underdamping, critical damping, overdamping, and resonance.

8. Question of the Day #51 True or False -The amplitude of a pendulum only affects the period when amplitudes are large. When they are small, the pendulum undergoes SHM. -In the absence of drag and friction, mass and period length are inversely proportional. -As the length of the pendulum increases, the period increases with a linear relationship. -In the presence of drag and friction, a pendulum exhibits severely underdamped harmonic motion. Mar 15 Today’s Activities -Wave Notes Homework: Pendulum lab due Thursday SHM Quiz Tomorrow

9. No Question of the Day today Mar 16 Today’s Activities -SHM Quiz -Wave Practice Homework Homework: Pendulum lab due tomorrow Wave practice homework due Friday AP Practice questions due Monday Ch 11 and 12 Test on March 29

10. Question of the Day #52 Mar 17 Today’s Activities -Wave lab Homework: Wave practice homework due tomorrow AP Practice questions due March 21 Ch 11 and 12 Test on March 29

11. Question of the Day #53 Mar 18 Today’s Activities -Wave lab Homework: Wave lab and AP Practice questions due Monday Ch 11 and 12 Test on March 29 Sketch this wave. What two characteristics of the wave affect its energy? What two characteristics of the wave affect its speed? Sketch another wave on the same graph that has a higher frequency, but less energy than the original wave.

12. Part B redirect – examine your data/observations and write evidence based claims including a claim, evidence, and reasoning (see below for reasoning) Energy affects amplitude and frequency (and vice versa), but not speed of the wave. Amplitude does not affect the speed of a wave in a given medium nor frequency. Changes in tension in your slinky affect the speed of the wave, so your method of changing the amplitude may affect the speed leading to a false conclusion. Only frequency, wavelength, type of wave and the medium (composition and tension) affect the speed of the wave.

13. No Question of the Day today Mar 21 Today’s Activities -Correct Wave Practice -Standing Waves and Sound Notes Homework: None Ch 11 and 12 Test on March 29

14. Question of the Day #54 A string is 0.72m long. What is the wavelength at the fundamental frequency? If the wave speed is 230m/s, what is the fundamental frequency? What is the 2 nd harmonic frequency? Mar 22 Today’s Activities -Correct AP Practice -Phet Standing Waves Homework: Finish Phet – due at beginning of class tomorrow Ch 11 and 12 Test on March 29 Ch 8 Test corrections and SHM Quiz corrections due by March 28

15. No QD today Mar 23 Today’s Activities -Last set of notes -Homework packet Homework: Homework packet due March 28 (all questions attempted) Ch 11 and 12 Test on March 29 Ch 8 Test corrections and SHM Quiz corrections due by March 28

16. Question of the Day #55 Mar 24 Today’s Activities -Wave Freq Lab (beats) Homework: Homework packet due March 28 (all questions attempted) Ch 11 and 12 Test on March 29 Ch 8 Test corrections and SHM Quiz corrections due by March 28

17. Question of the Day #56 A string is 0.72m long. An open tube is also 0.72m long. A tube closed at one end is 0.72m long. A) What is the wavelength at the fundamental frequency for each of these? B) Make a sketch of the standing wave for each of these. Mar 25 Today’s Activities Finish lab Homework packet Homework: Homework packet due Monday (all questions attempted) Ch 11 and 12 Test on March 29 Ch 8 Test corrections and SHM Quiz corrections due by March 28

18. Question of the Day #57 The driver of a car blows the horn as the car approaches you. Compared to the horn’s pitch heard by the driver, will the pitch observed by you be higher, lower, or the same? The car passes you, while the driver continues to blow the horn. After the car passes, you notice that the horn doesn’t sound as loud as it did when it was near you. Is this observation a result of the Doppler effect? The car recedes from you after passing you, still producing sound waves from the horn. Address how the amplitude, period and frequency of the sound waves that you would measure compare to the amplitude, period and frequency of the sound waves that the driver would measure. Mar 28 Today’s Activities Homework questions and test review Homework: Prepare for test, finalize homework Ch 11 and 12 Test Tomorrow