Started going over Relativity Test. Had trouble keeping students' attention so I let them look at it by themselves and then went around and answered any questions when I collected the tests.
Discussed electric field using analogy with gravity.
Discussed how to draw electric field lines:
1. Electric field lines originate on + charges and terminate on - charges.
2. The density of the field lines indicates the strength of the electric field
3. A charge in an electric field feels a force in a direction tangent to the the electric field lines
4. Electric field lines are always perpendicular to conductors in the static case.
5. Electric field lines never cross.
Discussed electric fields with conductors.
Discussed electric fields with insulators (uniform charge distributions)
Derived the equation for the gravitational force as a function of distance from the center of the Earth.
Students were not ready to start electric potential so I gave out 3 quizzes on electric charge and Coulomb's Law.
Handed out RA 21.2 for homework due tomorrow.
Monday, April 27, 2009
Friday, April 24, 2009
Friday, April 24, 2009 - Block 3
Didn't have time to grade the tests.
Did go over a couple of problems from the test.
Started Electrostatics
Showed analogy between gravity and electrostatics with comparison between Law of Universal Gravitation and Coulomb's Law.
Two types of charge, + and -
Like charges repel, opposite charges attract.
Charge is quantized. Smallest charges are charges of electron and proton.
Conservation of Charge - Charge cannot be created or destroyed.
Used the electroscope to show charge by friction and by contact.
Showed charge by induction - wrote steps on board.
Used the electroscope to determine charges on balloon and Van de Graff
Showed polarization using balloon on wall and changing water stream.
Students used Van de Graff.
Worked problems on Coulomb's Law.
Handed out worksheet on Coulomb's Law.
Handed out RA 21.1 due Monday.
Did go over a couple of problems from the test.
Started Electrostatics
Showed analogy between gravity and electrostatics with comparison between Law of Universal Gravitation and Coulomb's Law.
Two types of charge, + and -
Like charges repel, opposite charges attract.
Charge is quantized. Smallest charges are charges of electron and proton.
Conservation of Charge - Charge cannot be created or destroyed.
Used the electroscope to show charge by friction and by contact.
Showed charge by induction - wrote steps on board.
Used the electroscope to determine charges on balloon and Van de Graff
Showed polarization using balloon on wall and changing water stream.
Students used Van de Graff.
Worked problems on Coulomb's Law.
Handed out worksheet on Coulomb's Law.
Handed out RA 21.1 due Monday.
Tuesday, April 21, 2009 - Block 3
Answered questions on special relativity.
Continued with General Relativity
Finished with Pound Rebka Worksheet.
Continued with General Relativity
Finished with Pound Rebka Worksheet.
Monday, April 20, 2009 - Block 3
Gave another quiz using KE and energy equation.
Started General Relativity.
Introduction
Two skits
Kindergarten Approach to General Relativity.
Principle of Equivalence worksheet
Started General Relativity.
Introduction
Two skits
Kindergarten Approach to General Relativity.
Principle of Equivalence worksheet
Friday, April 17, 2009
Friday, April 17, 2009 - Block 2
Gave out 4 quizzes on relativity.
1: E=m c^2
2: Increase in mass
3: Time dilation
4: Energy equation.
Went over quizzes. Went over homework problems 12, 13. Again very few students actually did them so I gave time in class for them to finish them up.
On Monday, we will have some more quizzes on special relativity which will finish it up. We will start General Relativity and finish up on Tuesday. Test on Thursday.
1: E=m c^2
2: Increase in mass
3: Time dilation
4: Energy equation.
Went over quizzes. Went over homework problems 12, 13. Again very few students actually did them so I gave time in class for them to finish them up.
On Monday, we will have some more quizzes on special relativity which will finish it up. We will start General Relativity and finish up on Tuesday. Test on Thursday.
Thursday, April 16, 2009
Thursday, Aoril 16, 2009 - Block 3
Handed back quizzes and answered any question.
Quiz on time dilation.
Expanded quiz to include length contraction. Showed how you could solve the problem either by using length contraction or the Seattle example (since the velocity was constant).
Showed how to get KE from Newton's 2nd Law.
Showed how to get E=mc^2
mc^2 = mo c^2 + KE
Do not use KE = 1/2 mv^2 for relativistic problems.
Worked problems on E=mc^2.
Went over problems 6-11 on homework sheet.
Assigned problems 12-14 for homework. This will finish up Special Relativity. We will have a test on relativity next week.
Quiz on time dilation.
Expanded quiz to include length contraction. Showed how you could solve the problem either by using length contraction or the Seattle example (since the velocity was constant).
Showed how to get KE from Newton's 2nd Law.
Showed how to get E=mc^2
mc^2 = mo c^2 + KE
Do not use KE = 1/2 mv^2 for relativistic problems.
Worked problems on E=mc^2.
Went over problems 6-11 on homework sheet.
Assigned problems 12-14 for homework. This will finish up Special Relativity. We will have a test on relativity next week.
Wednesday, April 15, 2009 - Block 3
Quiz on velocity addition.
Quiz on time dilation.
Talked about increase of mass with speed. Sketched graph of mass vs speed.
Assigned problems 8-11 for homework.
Quiz on time dilation.
Talked about increase of mass with speed. Sketched graph of mass vs speed.
Assigned problems 8-11 for homework.
Tuesday, April 14, 2009
Tuesday, April 14, 2009 - Block 3
Went over homework problems.
Corrected problem with time dilation.
Showed Hewitt video on Relativity.
Talked about length contraction.
Assigned problems 4-7 due tomorrow.
Corrected problem with time dilation.
Showed Hewitt video on Relativity.
Talked about length contraction.
Assigned problems 4-7 due tomorrow.
Friday, April 10, 2009 - Block 3
Relativity Lecture - Thought experiments (corrections to relative velocity equation, simultaneity, rushed time dilation and made stupid mistake.)
Assigned problems 1-3 from problem sheet - due Tuesday.
Assigned problems 1-3 from problem sheet - due Tuesday.
Thursday, April 9, 2009
Thursday, April 9, 2009 - Block 3
Announced students selected for IB portfolio.
Handed back Heat and Thermo test and went over every question.
Outlined plans for next 4 1/2 weeks before IB Physics test.
Started relativity in last 20 minutes of class.
Handed back Heat and Thermo test and went over every question.
Outlined plans for next 4 1/2 weeks before IB Physics test.
Started relativity in last 20 minutes of class.
Wednesday, April 8, 2009
Wednesday, April 8, 2009
Heat, Temperature, and Thermodynamics Test
Got signatures for last few PSOW including Luminosity of Sun Lab
Got signatures for last few PSOW including Luminosity of Sun Lab
Tuesday, April 7, 2009
Tuesday, April 7, 2009 - Block 3
Students cleared desks and I handed back graded pendulum labs, specific heat labs, and PSOW forms.
Answered questions and then students signed PSOW forms.
I collected the labs and PSOW from students who are doing IB.
Very few students worked on the review problems for tomorrow's test.
I did one problem on the board and then gave the students time in class to work on some of the remaining problems - answering questions as they arose.
Test tomorrow on heat, temperature, and thermodynamics.
Answered questions and then students signed PSOW forms.
I collected the labs and PSOW from students who are doing IB.
Very few students worked on the review problems for tomorrow's test.
I did one problem on the board and then gave the students time in class to work on some of the remaining problems - answering questions as they arose.
Test tomorrow on heat, temperature, and thermodynamics.
Monday, April 6, 2009
Monday, April 6, 2009 - Block 3
Showed parafin light detector. Demonstrated how it worked with 1-1 and 2-1 light bulbs. Gave IB students option of doing one more data and results lab. Due Wed morning at the very latest.
Two group did it.
Went over RA 17.1, 17.2
Showed rest of Hewitt video on Change of State.
Handed out review problem set in preparation for test on Wednesday.
Two group did it.
Went over RA 17.1, 17.2
Showed rest of Hewitt video on Change of State.
Handed out review problem set in preparation for test on Wednesday.
Friday, April 3, 2009
Heat transfer by radiation
Wien's Law
Stefan-Boltzman Equation
Worked some examples
Gave students the "Nobel Prize" problem. Students didn't like that one much.
Wien's Law
Stefan-Boltzman Equation
Worked some examples
Gave students the "Nobel Prize" problem. Students didn't like that one much.
Thursday, April 2, 2009
Thursday, April 2, 2009 - Block 3
Collected all remaining IB labs.
Collected RA 17.1
RA 17.2 is due tomorrow.
Told students that starting tomorrow, no late work will be accepted. It will receive a zero grade.
Handed out heat engine problem and gave students time in class to work on it.
Lectured on the 2nd Law of Thermodynamics
Collected RA 17.1
RA 17.2 is due tomorrow.
Told students that starting tomorrow, no late work will be accepted. It will receive a zero grade.
Handed out heat engine problem and gave students time in class to work on it.
Lectured on the 2nd Law of Thermodynamics
Wednesday, April 1, 2009
Wednesday, Aprile 1, 2009 - Block 3
Reviewed yesterday's simulations and data base exercise.
Told students that I need hardcopies of the calorimetry labs by tomorrow. Emailing them to me does not count.
Intro to thermodynamics.
Reviewed concepts.
Went over first law of thermodynamics.
Showed how work = pressure * volume = area under the curve in a PV diagram
Did worksheets on sign convention.
Showed the four adiabatic processes: constant pressure (isobaric), constant volume, constant temperature (isothermal), no heat exchange (adiabatic). Explained the computational advantages of each and showed what they look like on a PV diagram.
Told students that I need hardcopies of the calorimetry labs by tomorrow. Emailing them to me does not count.
Intro to thermodynamics.
Reviewed concepts.
Went over first law of thermodynamics.
Showed how work = pressure * volume = area under the curve in a PV diagram
Did worksheets on sign convention.
Showed the four adiabatic processes: constant pressure (isobaric), constant volume, constant temperature (isothermal), no heat exchange (adiabatic). Explained the computational advantages of each and showed what they look like on a PV diagram.
Subscribe to:
Comments (Atom)