All Sections: Complete the ray diagram packet handed out in class today.
**Sections 2 & 3, also answer this question:
Try to come up with some mathematical principles or phrases that describe how the changes in the distance of the object relative to the focal length relate to the distance of the image.
** Section 1: You can find an electronic copy of the worksheet under the 'Homework' section of the blog.
Wednesday, May 30
Sections 1 & 2: Do some research, and in your notebook, write down what type of lenses nearsighted and farsighted people need to correct their vision. Describe why this is using the optic principles we learned about today, and draw some diagrams. This link should help to get you started:
http://www.youtube.com/watch?v=iws1Mfu1k84
http://www.youtube.com/watch?v=iws1Mfu1k84
Tuesday, May 29
Section 3:
Do some research, and in your notebook, write down what type of lenses nearsighted and farsighted people need to correct their vision. Describe why this is, and draw some diagrams.
Section 1:
Due Tomorrow:
Read pg. 415-422 in your textbook. In your notebook, copy down the lens/mirror equation, the magnification equation, and the example problem on page 422-423.
Due Friday:
Write a 1-2 page written response to the movie (you should cite particular parts of the movie), with a focus on the following questions:
1) To whom does the burden of 'ethics' fall? Scientist doing the research, politicians funding and applying science and technology in policy or philosophers integrating ethics and science?
2) Which of the aforementioned parties do you think have the loudest voice?
3) Are there any research methods, or topics that are too immoral to pursue? (e.g. human experimentation)
4) Is it possible to pursue the purest desire to understand the mysteries of the universe and maintain a lens of social ethics?
5) Are there any particular events, statements or arguments that really struck you? Why do you think that is?
Here are links to help you formulate your response...
What does ethics mean to contemporary scientist:
http://temp.onlineethics.org/codes/ACScode.html
http://www.aps.org/policy/statements/02_2.cfm
To help you understand the power of the bomb:
http://www.blogger.com/goog_2139632769
http://www.youtube.com/watch?v=ppgdBI31-lo
The decision to drop the bomb:
http://www.ushistory.org/us/51g.asp
http://www.doug-long.com/oppie.htm
Other sides of the story:
http://www.unmuseum.org/nbomb.htm
http://www.nybooks.com/articles/archives/2000/oct/19/heisenberg-in-copenhagen/?pagination=false
I've given you plenty to work with but feel free to also bring your own research to the discussion. You've been studying ethics in religion; remember that a 'because I think/feel it's right' mentality is not enough to support a solid, academic discussion points. Be prepared to back up your opinions with facts!
Do some research, and in your notebook, write down what type of lenses nearsighted and farsighted people need to correct their vision. Describe why this is, and draw some diagrams.
Section 1:
Due Tomorrow:
Read pg. 415-422 in your textbook. In your notebook, copy down the lens/mirror equation, the magnification equation, and the example problem on page 422-423.
Due Friday:
Write a 1-2 page written response to the movie (you should cite particular parts of the movie), with a focus on the following questions:
1) To whom does the burden of 'ethics' fall? Scientist doing the research, politicians funding and applying science and technology in policy or philosophers integrating ethics and science?
2) Which of the aforementioned parties do you think have the loudest voice?
3) Are there any research methods, or topics that are too immoral to pursue? (e.g. human experimentation)
4) Is it possible to pursue the purest desire to understand the mysteries of the universe and maintain a lens of social ethics?
5) Are there any particular events, statements or arguments that really struck you? Why do you think that is?
Here are links to help you formulate your response...
What does ethics mean to contemporary scientist:
http://temp.onlineethics.org/codes/ACScode.html
http://www.aps.org/policy/statements/02_2.cfm
To help you understand the power of the bomb:
http://www.blogger.com/goog_2139632769
http://www.youtube.com/watch?v=ppgdBI31-lo
The decision to drop the bomb:
http://www.ushistory.org/us/51g.asp
http://www.doug-long.com/oppie.htm
Other sides of the story:
http://www.unmuseum.org/nbomb.htm
http://www.nybooks.com/articles/archives/2000/oct/19/heisenberg-in-copenhagen/?pagination=false
I've given you plenty to work with but feel free to also bring your own research to the discussion. You've been studying ethics in religion; remember that a 'because I think/feel it's right' mentality is not enough to support a solid, academic discussion points. Be prepared to back up your opinions with facts!
Wednesday, May 23
All Sections: Read page 404 (starting with effects of refraction) to page 409 and answer section review questions 1-4 on page 409.
Tuesday, May 22
Section 1: Using the Bending Light PhET sim, switch to the tab on the top of the PhET sim titled “Prism Break.” Then answer the following questions:
1) Are the reflection and refraction of light color-dependent? How can you tell?
2) Which shapes split the white light into different colors the best? Is there a particular set-up that you found demonstrates this well?
3) Given that white light can be split, try to make a situation where light forms a rainbow. What shape did you use to do this? Can you make a double rainbow in any way?
Sections 2 & 3: Complete assignment posted for section 1 yesterday.
1) Are the reflection and refraction of light color-dependent? How can you tell?
2) Which shapes split the white light into different colors the best? Is there a particular set-up that you found demonstrates this well?
3) Given that white light can be split, try to make a situation where light forms a rainbow. What shape did you use to do this? Can you make a double rainbow in any way?
Sections 2 & 3: Complete assignment posted for section 1 yesterday.
Monday, May 21
Section 1: Go to http://phet.colorado.edu/en/simulation/bending-light
The applet allows you to change the position of a laser, and also change both media. You can drag a protractor onto the screen to measure the angles of incidence and refraction.
You have two assignments:
1) Devise a procedure to calculate the index of refraction for Materials "Mystery A" and "Mystery B," and then carry it out. Tell me what you did, write down the angles you measured, and show your calculations.
2) Make the first medium water and the second air. Continue to increase the incident angle. At some point, light will stop refracting. The greatest incident angle for which refraction will occur called the critical angle. Find the critical angle for light as it goes from water to air.
Section 2: Read pages 403-404 (Total Internal Reflection) in your textbook. Also, read the 'How It Works' section on page 405 and answer the two Thinking Critically questions at the bottom of the page.
Finally, check your email later for the six flags assignment. I will be in by 4th period, so if you want, you may stop by later in the day to pick up a hard copy of the assignment from me.
The applet allows you to change the position of a laser, and also change both media. You can drag a protractor onto the screen to measure the angles of incidence and refraction.
You have two assignments:
1) Devise a procedure to calculate the index of refraction for Materials "Mystery A" and "Mystery B," and then carry it out. Tell me what you did, write down the angles you measured, and show your calculations.
2) Make the first medium water and the second air. Continue to increase the incident angle. At some point, light will stop refracting. The greatest incident angle for which refraction will occur called the critical angle. Find the critical angle for light as it goes from water to air.
Section 2: Read pages 403-404 (Total Internal Reflection) in your textbook. Also, read the 'How It Works' section on page 405 and answer the two Thinking Critically questions at the bottom of the page.
Finally, check your email later for the six flags assignment. I will be in by 4th period, so if you want, you may stop by later in the day to pick up a hard copy of the assignment from me.
Friday, May 18
Sections 1 & 3: Read pages 403-404 (Total Internal Reflection) in your textbook. Also, read the 'How It Works' section on page 405 and answer the two Thinking Critically questions at the bottom of the page.
Tuesday, May 15
Section 1 & 2: Answer the following questions in your notebook. You can find the length of the column-wavelength relationship for open pipe resonance on page 360 of your textbook.
1) A super physics student is playing his open-end pipe. The frequency of the second harmonic is 880 Hz (a pitch of A5). The speed of sound through the pipe is 350 m/sec. Find the frequency of the first harmonic and the length of the pipe.
2) On a cold frigid day, Matthew blows on a toy flute, causing resonating waves in an open-end air column. The speed of sound through the air column is 336 m/sec. The length of the air column is 30.0 cm. Calculate the frequency of the first, second, and third harmonics.
3) A flute is played with a first harmonic of 196 Hz (a pitch of G3). The length of the air column is 89.2 cm (quite a long flute). Find the speed of the wave resonating in the flute.
Section 3: Answer the following questions in your notebook:
1) Titan Tommy and the Test Tubes at a night club this weekend. The lead instrumentalist uses a test tube (closed-end air column) with a 20.2 cm air column. The speed of sound in the test tube is 340 m/sec. Find the frequency of the first harmonic played by this instrument.
1) A super physics student is playing his open-end pipe. The frequency of the second harmonic is 880 Hz (a pitch of A5). The speed of sound through the pipe is 350 m/sec. Find the frequency of the first harmonic and the length of the pipe.
2) On a cold frigid day, Matthew blows on a toy flute, causing resonating waves in an open-end air column. The speed of sound through the air column is 336 m/sec. The length of the air column is 30.0 cm. Calculate the frequency of the first, second, and third harmonics.
3) A flute is played with a first harmonic of 196 Hz (a pitch of G3). The length of the air column is 89.2 cm (quite a long flute). Find the speed of the wave resonating in the flute.
Section 3: Answer the following questions in your notebook:
1) Titan Tommy and the Test Tubes at a night club this weekend. The lead instrumentalist uses a test tube (closed-end air column) with a 20.2 cm air column. The speed of sound in the test tube is 340 m/sec. Find the frequency of the first harmonic played by this instrument.
2) Carla takes a 22.0-cm length of rigid, plastic tubing and places it into a glass of water so that one end of the tube is submerged 3.0-cm. She gently blows across the opposite end of the tube. What frequency sound waves will the tube produce? (The speed of sound at room temperature is 343 m/s)
3) On a cold frigid day, Matthew blows on a toy flute, causing resonating waves in an open-end air column. The speed of sound through the air column is 336 m/sec. The length of the air column is 30.0 cm. Calculate the frequency of the first, second, and third harmonics.
Six Flags Trip
If you plan on attending Physics Day at Six Flags on May 25th, you need to bring in your permission slip TOMORROW, if you have not already.
Friday, May 11
Sections 1 & 2: Answer the following questions in your notebook:
1) A closed-end organ pipe is used to produce a mixture of sounds. The third and fifth harmonics in the mixture have frequencies of 1110 Hz and 1850 Hz respectively. What is the frequency of the first harmonic played by the organ pipe?
2) Don't miss Pipin' Pete live at City Park next weekend! He'll be featuring his new and improved, Poppin' Pipin' Playin' Machine! One of the closed-end pipes is capable of sounding out a first harmonic of 349.2 Hz. If the speed of sound in the pipe is 350 m/sec, what is the length of the air column inside the pipe?
3) Carla takes a 22.0-cm length of rigid, plastic tubing and places it into a glass of water so that one end of the tube is submerged 3.0-cm. She gently blows across the opposite end of the tube. What frequency sound waves will the tube produce? (The speed of sound at room temperature is 343 m/s)
1) A closed-end organ pipe is used to produce a mixture of sounds. The third and fifth harmonics in the mixture have frequencies of 1110 Hz and 1850 Hz respectively. What is the frequency of the first harmonic played by the organ pipe?
2) Don't miss Pipin' Pete live at City Park next weekend! He'll be featuring his new and improved, Poppin' Pipin' Playin' Machine! One of the closed-end pipes is capable of sounding out a first harmonic of 349.2 Hz. If the speed of sound in the pipe is 350 m/sec, what is the length of the air column inside the pipe?
3) Carla takes a 22.0-cm length of rigid, plastic tubing and places it into a glass of water so that one end of the tube is submerged 3.0-cm. She gently blows across the opposite end of the tube. What frequency sound waves will the tube produce? (The speed of sound at room temperature is 343 m/s)
Thursday, May 10
Section 3: Finish your phet simulation sheet from today, if you have not already. Also, read pgs. 357-361 in your textbook. In your notebook, draw everything you see in Figures 15-11 and 15-12 (pg. 360) and copy down the practice problem on pg. 361.
Section 1: Here's the definition of the doppler effect:
The Doppler Effect is a result of the compression and expansion of waves due to the motion of the source or the detector.
Now answer the following questions in your notebook:
1) At a swimming pool, a music fan up on a diving platform is listening to a radio. As the radio is playing a tone that has a constant frequency, fs, it is accidentally knocked off the platform. Describe the Doppler effect heard by (a) the person on the platform and (b) a person down in the water. In each case, state whether the observed frequency, f0, is greater than fs and describe how f0 changes (if it changes) as the radio falls (you may want to draw a picture).
2) You are heading toward an island in a speedboat and you see your friend standing on the shore, at the base of a cliff. You sound the boat’s horn to alert your friend of your arrival. If the horn has a rest frequency of f0, does your friend hear a higher, lower or equal frequency? Explain.
3) A fire engine is moving at 40 m/s and sounding its horns. A car in front of the fire engine is moving at 30 m/s, and a van in front of the car is stationary. Which observer hears the fire engine's horn at higher pitch, the driver of the car or the van?
4) A bat flying toward a wall emits a chirp at 40 kHz. Is the frequency of the echo received by the bat greater than, less than, or equal to 40 kHz? Explain
Section 1: Here's the definition of the doppler effect:
The Doppler Effect is a result of the compression and expansion of waves due to the motion of the source or the detector.
Now answer the following questions in your notebook:
1) At a swimming pool, a music fan up on a diving platform is listening to a radio. As the radio is playing a tone that has a constant frequency, fs, it is accidentally knocked off the platform. Describe the Doppler effect heard by (a) the person on the platform and (b) a person down in the water. In each case, state whether the observed frequency, f0, is greater than fs and describe how f0 changes (if it changes) as the radio falls (you may want to draw a picture).
2) You are heading toward an island in a speedboat and you see your friend standing on the shore, at the base of a cliff. You sound the boat’s horn to alert your friend of your arrival. If the horn has a rest frequency of f0, does your friend hear a higher, lower or equal frequency? Explain.
3) A fire engine is moving at 40 m/s and sounding its horns. A car in front of the fire engine is moving at 30 m/s, and a van in front of the car is stationary. Which observer hears the fire engine's horn at higher pitch, the driver of the car or the van?
4) A bat flying toward a wall emits a chirp at 40 kHz. Is the frequency of the echo received by the bat greater than, less than, or equal to 40 kHz? Explain
Wednesday, May 9
Sections 2 & 3: Here's the definition of the doppler effect, if you didn't have the chance to write it down in class today:
The Doppler Effect is a result of the compression and expansion of waves due to the motion of the source or the detector.
Now answer the following questions in your notebook:
1) At a swimming pool, a music fan up on a diving platform is listening to a radio. As the radio is playing a tone that has a constant frequency, fs, it is accidentally knocked off the platform. Describe the Doppler effect heard by (a) the person on the platform and (b) a person down in the water. In each case, state whether the observed frequency, f0, is greater than fs and describe how f0 changes (if it changes) as the radio falls (you may want to draw a picture).
2) You are heading toward an island in a speedboat and you see your friend standing on the shore, at the base of a cliff. You sound the boat’s horn to alert your friend of your arrival. If the horn has a rest frequency of f0, does your friend hear a higher, lower or equal frequency? Explain.
3) A fire engine is moving at 40 m/s and sounding its horns. A car in front of the fire engine is moving at 30 m/s, and a van in front of the car is stationary. Which observer hears the fire engine's horn at higher pitch, the driver of the car or the van?
4) A bat flying toward a wall emits a chirp at 40 kHz. Is the frequency of the echo received by the bat greater than, less than, or equal to 40 kHz? Explain.
The Doppler Effect is a result of the compression and expansion of waves due to the motion of the source or the detector.
Now answer the following questions in your notebook:
1) At a swimming pool, a music fan up on a diving platform is listening to a radio. As the radio is playing a tone that has a constant frequency, fs, it is accidentally knocked off the platform. Describe the Doppler effect heard by (a) the person on the platform and (b) a person down in the water. In each case, state whether the observed frequency, f0, is greater than fs and describe how f0 changes (if it changes) as the radio falls (you may want to draw a picture).
2) You are heading toward an island in a speedboat and you see your friend standing on the shore, at the base of a cliff. You sound the boat’s horn to alert your friend of your arrival. If the horn has a rest frequency of f0, does your friend hear a higher, lower or equal frequency? Explain.
3) A fire engine is moving at 40 m/s and sounding its horns. A car in front of the fire engine is moving at 30 m/s, and a van in front of the car is stationary. Which observer hears the fire engine's horn at higher pitch, the driver of the car or the van?
4) A bat flying toward a wall emits a chirp at 40 kHz. Is the frequency of the echo received by the bat greater than, less than, or equal to 40 kHz? Explain.
Monday, May 7th
All: Complete a typed summary of what you've learned about string theory and M-theory. Do your best to be as thorough, clear and organized as possible. I know these topics are very complex, but challenge yourself to synthesize the information to the best of your ability.
Friday, May 4th
All Sections: Finish your phet sim assignment for Monday, if you have not already.
Have a great weekend and May the 4th be with you!
Have a great weekend and May the 4th be with you!
Thursday, May 3
All Sections:
1) If you have not already submitted a procedure for you speaker, make sure to get it to me by tomorrow.
2) Under the heading 'Homework', you will find a document that will lead you through a PHET simulation. (The sim is called Standing Waves, if you want to use the phet links on this page). SENIORS should complete this entire assignment for next week. JUNIORS should complete #1-5 for class tomorrow.
3) Tomorrow is the last day to submit test corrections for the Magnetism test.
4) SENIORS check you email over the weekend.
1) If you have not already submitted a procedure for you speaker, make sure to get it to me by tomorrow.
2) Under the heading 'Homework', you will find a document that will lead you through a PHET simulation. (The sim is called Standing Waves, if you want to use the phet links on this page). SENIORS should complete this entire assignment for next week. JUNIORS should complete #1-5 for class tomorrow.
3) Tomorrow is the last day to submit test corrections for the Magnetism test.
4) SENIORS check you email over the weekend.
Wednesday, May 2
All: If you have not already handed in the procedure for your speaker, it is due tomorrow. Test corrections are also due tomorrow, if you have not already handed them in.
Tuesday, May 1
Physics 2: Loudspeaker lab quesitons (1 doc. per group) are due in my email inbox by 6pm today!!! You may also do test corrections for tomorrow.
Physics 3: Do test corrections for tomorrow. Also, be ready to present your speaker during tomorrow's second lab period! (YES!!)
Physics 3: Do test corrections for tomorrow. Also, be ready to present your speaker during tomorrow's second lab period! (YES!!)
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