12/10

Objective:  SWBAT determine the pressure exerted by a fluid.

Warm Up:  Pick up two "In-class example" sheets and staple.  Do problems 1 and 2.

12/5

Objective:  SWBAT determine the energy of a spring in simple harmonic motion.

Warm Up:  Define mechanical energy.  Then write an equation for  mechanical energy that includes terms for all of the types of energy we have studied so far in class.  (No numbers, just symbols in the equation.)

12/3

Objective:  SWBAT determine the factors that affect the oscilation of a spring and a pendulum.

Warm Up:  Pick up two worksheets and staple together.  Answer question #1.

11/29

Objective:  SWBAT review for tomorrow's test on rotational kinematics and torque.

Warm Up:  Get out your in class example packet and solve #6.

11/26

Welcome Back!

Objective:  SWBAT practice solving problems in rotational kinematics and complete a short activity on torque.

Warm Up:  Pick up one handout.  Solve problem #1.

11/19

Objective:  SWBAT examine the history and development of safety features in automobiles.

Today's Assignment:  Watch the movie "Modern Marvel's Car Crashes".  Choose a safety feature in automobiles that you would like to research.  Write a 500 work typewritten report on the history, development and physics behind your safety feature.  Due Tuesday Nov 27th.

11/15

Objective:  SWBAT review for tomorrow's test on momentum.

Warm Up: A bullet is shot into a suspended block of wood as shown on the board.  Find the initial velocity of the bullet.

11/9

Objective:  SWBAT design a lab using a ramp and two marbles that demonstrates that momentum is conserved in a two dimentional collision.

Warm UP:  Pick up a lab worksheet.  Form a group of 4.  How can I determine the speed of a marble that has traveled down a ramp?

11/08

Objective:  SWBAT understand the concept of center of mass.

Warm Up:  Where is the center of mass on a meter stick?  on a person? on a hammer? on a donut?

11/02

Objective:  SWBAT apply the work energy theorem to solve problems involving energy.

Warm Up: A firework rocket is launched from rest.  425 J of work is done on the rocket by the propellent to cause the rocket to reach a height of 29 m.  Ignoring air resistance (and the loss of mass due to the burning of the propellent) determine the final velocity of the rocket.

11/1

Objective:  SWBAT calculate conservation of energy problems.

Warm Up:  If the speed of a pendulum is 5 m/s at the bottom of it's swing, what is the height  of the pendulum when it has speed of 2 m/s?

10/31

Welcome back from our mini hurrication.  That storm was spooky!

Objective:  SWBAT understand how work, power and energy are related.

Warm Up:  Pick up an inclass review packet.  Do problem #1.

10/25

Objective:  SWBAT use the pHet site simulations to understand Conservation of energy.

Warm Up:  Get out your netbook, log onto Edmodo.  Open the file for Energy Park 1 and the Energy Park Sim.  Get to work!

10/24

Objective:  SWBAT calculate work and power.

Warm Up:  List the key equations for work, power and energy.  Then determine the potential energy of a 5 kg box at the top of a 5 m high ramp that is at an angle of 30 degrees above the horizontal.  If the ramp is frictionless, what is the speed of the box when it has slide half way down the ramp?

10/23

Objective:  SWBAT determine the work and power needed to walk vs. run up a flight of stairs.

Warm Up:  Pick up a worksheet and turn in your chapter outline.  Define the terms work, power and energy.

10/18

Objective:  SWBAT review for your test on Uniform Circular Motion.

Warm UP:  Get our your Forces Review Packet and your Forces In Class Examples Packet.  Which of Keplers Laws states that a planet's speed will be faster when it is closer to the sun when compared to the same planet that is further from the sun at a different point in its eliptical path?

10/16

Objective:  SWBAT calculate centripetal force.

Warm Up:  A model airplane has a mass of 0.90 kg and moves at a contant speed in a circle that is parallel to the ground.  Find the tension in the guildeline (length 1.7 m) for speeds of 19 m/s and 38 m/s.

10/4

Objective:  SWBAT calculate Newton's 2nd Law problems with friction.

Warm Up:  Get out your In Class Examples packet and complete #9.

10/1

Objective:  SWBAT calculate the force of friction on an object.

Warm Up:  Pick up three pages and staple.  Do Question 1a.

9/27

Objective:  SWBAT calculate the force of gravity between two objects that have mass.

Warm Up:  Draw a free body diagram for the following circumstances-

A spacecraft taking off from Earth that is still within Earth's atmosphere and it is accelerating.
A spacecraft firing its engine and accelerating in space.
A spacecraft moving at constant speed in space.
A spacecraft landing gently on the surface of the moon.

9/26

Objective:  SWBAT draw and interpret  free body diagrams.

Warm Up: Draw a free body diagram of a ball rolling down a hill.

9/25

Yesterday and today are lab days.  Yesterday we did the Constant Force and Constant Mass labs on Newton's 2nd Law.  Today you will be broken into one of two groups that will design and carry out a formal lab on the relationship between force and acceleration OR mass and acceleration.  You will be using fellow classmates on roller skates to perform the experment.

9/24

Objective: SWBAT explore the effects of changing force on an object and mass of an object on that object's acceleration.

Warm Up: Choose a group of NO MORE THAN 3 students to work with. Make sure you are working with someone you haven't worked with so far this year (failure to follow these directions will result in a 10 point deduction in your lab's grades.  Pick up one white lab handout and one yellow handout PER GROUP.  As a group, preread the instructions on both lab handouts.

9/21

Objective:  SWBAT calculate the weight of an object and distinguish this from the object's mass.

Warm Up:  What is your mass?  What is your weight on Earth?  What is your mass on the moon?  What is your weight on the moon?  Use correct SI units, please!

9/20

Objective:  SWBAT understand the concept of inertia and how it relates to motion.

Warm Up:  Get into a group of 2 or 3.  Pick up the lab handouts.  Answer the pre-lab questions.

9/18

Objective:  SWBAT review for tomorrow's test on 2 D kinematics

Warm Up:  Determine what is happening to the objects motion based on the signs

                      v                              a
                      +                              -
                      -                               -
                      -                               +
                      +                              +

9/17

Objective:  SWBAT solve problems involving 2 D kinematics.

Warm Up:  What variables do you know at ymax that are usually not stated in the problem?

9/13

Objective:  SWBAT perform an experiment to determine the effect of the angle of the launch of a projectile on its range.

Warm Up:  Pick up one lab handout.  SILENTLY pre-read the lab.  Write (on the bottom of the front page of the lab) a one sentence summary for what you are testing in Part A and another sentence summarizing what you are testing in Part B.

9/11

Objective:  SWBAT demonstrate their knowledge of 1 D physics on an exam.

Warm Up:  Pick up your scantron.  Green side today!  Get out a calculator and pencil.

Date:  9/11/12
Subject:  1D motion

9/10/12

Objective:  SWBAT review for tomorrow's test on 1 D kinematics.

Warm Up:  Get out your homework and your kinematics worksheet.  A hiker hikes 360 m at 15 degreees before turning and hiking 700 m at 250 degrees.  What is the total distance traveled and final displacement of the hiker?

9/7

Objective:  SWBAT determine the motion of an object in free fall.

Warm Up:  A flower pot falls off a 20 m high balcony.  How much time elapses before it hits the ground?  How fast is it going when it hits the ground?

9/6

Objective:  SWBAT understand and quantify the motion of an object in free fall.

Warm Up:  What "causes" gravity?  In what direction does gravity act in general?  How does this differ with the direction of gravity on Earth?

9/5

Objective:  SWBAT solve 1 D kinematic problems using the 4 basic kinematic equations.

Warm Up:  Describe the motion of the graph on the board in sentences.

9/4

Objective:  SWBAT understand what dispacement, velocity, and acceleration represent in motion and to interpret motion from dva graphs.

Warm Up: List the positive directions and the negative directions.  How can an object with a negative velocity speed up? (Give you answer in terms of displacement and acceleration.)

8/29

Objective:  SWBAT add vectors graphically and mathematically and then test their answers on a force table.

Warm Up:  Pick up one lab handout, one piece of graph paper, a ruler and a protractor.  Using your graph paper, find the resultant vector from the graphical addition of the following vectors:

45 m due east + 52 m due north + 35 m @ 110 degrees + 62 m @ 200 degrees.

8/28

Objective:  SWBAT esperiemtnally determine the height of the flag pole.

Warm Up:  Pick up 2 lab handouts. With a partner, determine a method that you could use to determine the height of the flag pole WITHOUT climbing it.

Obejective:  SWBAT understand the causes of error in measurement and how they relate to the certainty of a measurement.

Warm Up:  What is the difference between deteriminate errors and indeterminate errors.

8/24

Objective:  SWBAT understand what a vector is and how it is used in science.

Warm Up:  Pick up your summer assignment packet.  There is no grade on it, but I have looked it over and recorded a grade on a rubric.  I still need to fill in your outline grade and whether or not you emailed me over the summer, so you'll get your overall grade on your summer assignment on Monday.

What do you think is the difference is between distance and displacement?

8/23

Objective:  SWBAT understand the importance of units and dimensional analysis in science.

Warm Up:  Pick up one handout, one safety test, and your scantron.  On a separate sheet of paper copy the questions you got wrong AND give the correct answer AND the reason for the correct answer.  Staple your corrections to your scantron.

If your scantron is not there, please see me.

8/22

Objective:  SWBAT review safety procedures in the lab and take the safety test.

Warm Up:  Find a partner and determine one thing that you should NOT do in a science class during a lab.

8/22

Welcome back to another school year!

Objective:  SWBAT become familiar with the class and understand what you will be learning and what will be expected of you in the upcoming year.

Warm Up:  Pick up 9 handouts (whew that's alot of information!).  Find a seat where you will learn best. 

Quiz- http://www.polleverywhere.com/my/polls#!/my/polls
(Don't panic, it's just a class poll!)

2nd period we will take the safety test.  No worries, it is the same one you took for chemistry last year.

Homework- 
1) Fill out all HHS paperwork, get parent signatures and turn it in tomorrow. (Lockers will be assigned in the order that I receive your Emergency Contact Forms.)  
2)  Fill out all AP Physics B paperwork, get parent signatures and turn it in tomorrow.
3)  Log onto our Edmodo (www.edmodo.com) class page (create an account following the directions I provided for you if you don't already have one).  Complete the short assignment that is listed there.

Help with the summer assignment

So, sometime between the end of May when I last checked it and the end of June, the website listed in your summer assignment decided to move the online help pages.  The new url for the online help pages will be http://www.fordhamprep.org/page.cfm?p=706 .  However, as of today, that page is not working.


Most of the summer assignment is a review, so many of you will know how to do most of it right off the bat.  But, for those of you who would like some help (or reassurance) for your summer assignment, here are some possibilities:


The Khan Academy-  http://www.khanacademy.org/  They have a searchable base of online videos (many of which are short and to the point).  Try searching what you are interested o
in and then read the descriptions of the videos.  Choose a video and watch.  


Graphing-  Read the information given in your packet and use it and what you've been taught in the past to answer the questions.


Error-  Many of you probably haven't learned much about error in measurements.  This is the section of the summer assignment that is probably new material for most of you. Read the information given in your packet and use it to answer the questions.


If you have questions, feel free to email me.  heyesd@calvertnet.k12.md.us  I will be checking my email almost daily, so you should get a reasonably timely answer.


Good luck, and my apologies that the help site isn't working.


Mrs. Heyes

7/2

Hello again,


Hope you all are keeping cool and didn't loose power for very long because of that storm.  Mine was only out for 8 hours, so I consider myself lucky!


So I just got word that the school is ordering new books for us.  So please don't purchase the old one listed at the top of the summer assignment.  You'll get your book on the first day of school.  Since you won't have the book to do the Chapter Outline that is due the first day of school, the chapter outline will be due on Thursday of the first week of school.   The remainder of the summer assignment will still be due on the first day of school.


Have a great summer and stay cool.


Mrs. Heyes

6/29

Hello all,


I've just gotten back from San Diego and the ISTE (International Society for Technology in Education) conference.  I haven't heard from the school yet about the book.   I hope to know something on Monday. You are able to do everything on the summer assignment without the book except outline the first chapters of the book.  Please check back after July 1 to see if you need to buy the book.


My apologies for the delay getting you the information.  Stay cool!


Mrs. Heyes

5/7

Objective:  SWBAT review for the AP test/final


Warm Up:  Pick up one packet.
A heat engine has an efficiency of 25% and extracts 120 J of heat from a hot reservoir per cycle. a) How much net work does it perform in each cycle? b)  How much heat does it exhaust in each cycle?

5/1

Happy May Day


Objective: SWBAT understand the relationship between density, volume, mass and the buoyant force.


Warm Up:  An aluminum object has a mass of 27.0 kg and a de4nsity of 2.70 x 10^3 kg/cubic m.  The object is attached to a string and immersed in a tank of water.  Determine the a) volume of the object and b) the tension in the string when it is completely immersed.

4/30

All students should report to the Media Center.
Bring some paper, a pencil, an equation sheet and a calculator.


Log on to this blog.  Go to http://apphysicsb.homestead.com/review.html .
Choose a subject within Newtonian Mechanics and click on it.  In the window pane on the left (in black) choose "Practice Questions".  Complete the quiz and email me the results (heyesd@calvertnet.k12.md.us).


Choose another subject within Newtonian Mechanics and repeat the process.  If time permits, take a third quiz (which will count as extra credit towards this assignment).


YOU MUST WORK INDIVIDUALLY.

4/27

Objective:  SWBAT determine how well they performed on the FRQ section of an AP Physics B Exam.


Warm Up:  Get out your 2009 AP FRQ's.
A 2.0 kg wooden block is on a level board and held against a spring for force constant 100 N/m which has been compresses 0.10 m.  The block is released and propelled horizontally across the board.  The coefficient of friction between the block and the board is 0.20.  Determine the velocity of the block just as it leaves the spring.  Also, determine the distance the block travels after it leaves the spring.

4/26

Objective:  SWBAT relate work and energy within a problem (finish forces review- start W, P, E review).


Warm Up:  A 50 kg rider on the "Rotor Ride" stands along a vertical wall in a circular room of radius 3.0 m.  The room begins to rotate and at a certain point the floor drops down several meters, leaving the rider pressed against the wall.  If the coefficient of static friction between the rider and the wall is 0.40, determine the minimum a) speed and b) frequency of rotation required to prevent the rider from slipping down the wall.  ( Hint:  draw a free body diagram of this situation!)

4/20

Objective:  SWBAT review kinematic problems for the AP exam.


Warm Up:  From the top of a cliff overlooking a lake, a person throws two stones.  The stones have identical initial speeds.  However, stone 1 is thrown downward at an angle (theta) that is below the horizontal and stone 2 is thrown at the same angle above the horizontal.  
1)  Draw a sketch of this situation
2) Neglecting air resistance, decide which stone, if any, strikes the water with a greater final velocity.

4/19

Objective:  SWBAT review projectile motion.


Warm Up:  A projectile is fired with an intiial speed of 113 m/s at an angle of 60 degrees above the horizontal from the top of a cliff 49 m high.  Determine the time to reach maximum height and the total time of flight.

4/18

Objective:  SWBAT review  1 and 2 D kinematics in preparation for the AP exam.


Warm Up:  Get out your kinematics outlines and pick up 2 handouts.  On the AP review sheet, list the subject as kinematics and complete question #1.


Agenda:  We will stick to these time frames so KEEP UP!
Review Sheet- 30 minutes
Graphing review packet- 35 minutes
Review Practice Quiz- 25 minutes

4/16

Objective:  SWBAT review for tomorrow's test on atomic physics


Warm Up:  Carbon-14 undergoes beta decay to form Nitrogen-14 plus __________ plus _________.
What type of radioactive decay is this?  What are the missing products?  How much mass is converted to energy in this reaction?

4/13

Oh, Lucky Day!


Objective:  Student will be able to determine the daughter products of radioactive decay.


Warm Up:  Uranium (mass 238) undergoes alpha decay.  What is the daughter product?

4/12

Seniors- Did you turn in your intent to graduate forms?


Objective:  SWBAT determine the decay products and energy liberated by an atomic reaction.


Warm Up:  Define radiation.  What are alpha, beta and gamma particles?  Where does the energy come from in a nuclear reaction?

WELCOME BACK!!


Objective:  SWBAT understand the photoelectric effect, and determine the work needed to free an electron from a metal.


Warm Up:  Turn in your Ch 30 and 31 Outlines and your practice test.  Whose equation is E=hf and what is the importance of this equation?

3/30

Objective:  SWBAT understand what the photoelectric effect  is and why Einstein's explanation of it was an important advancement of science.


Warm Up:  What is a Blackbody?  What is Planck's constant and how does it relate to Blackbody radiation?

3/28

Objective:  SWBAT review for tomorrow's test on Diffraction and Interference of waves


Warm Up:  What are the four phenomena that waves undergo?  Briefly describe each.

3/27

Pulling out my hair in the name of science.... ;-)


Objective:  SWBAT use diffraction to determine the width of a human hair.


Warm Up:  Pick up a laser pointer and a diffraction grating.  Determine the wavelength of your laser using what you've learned about diffraction.


Note:  4th Q extra credit is posted at the bottom of the blog.  It is due in early May.

3/23

Objective:  SWBAT virtually determine the diffraction pattern of water, sound and light.


Warm Up:  Pick up one lab handout.  Form a group of NO MORE THAN 3.  Open the PhET Diffraction and Interference Sim on a computer and begin the lab.

3/22

Objective:  SWBAT calculate the interference of light waves.


Warm Up:  Why are soap bubbles multicolored?

3/21

Objective:  SWBAT calculate the wavelength of light given the interference pattern it produces.


Warm Up:  What is the superposition principal?  How can that be applied to light waves?

3/19

Objective:  SWBAT review for tomorrow's test on light, reflection and refraction.


Warm Up:  A magnifying glass is held 5 cm above a flower.  The image that forms is upside down.  What do you know about the lens in the magnifying glass?

3/15

Et tu, Brute?


Objective:  SWBAT determine the critical angle of refraction for a substance.


Warm Up:  A light ray within a diamond (n=2.4)  cannot escape into air, but instead is totally internally refracted.  At what angle must the light ray have struck the surface for this to occur?

3/14

Objective:  SWBAT experimentally determine the index of refraction of a piece of glass.


Warm Up:  Pick up one copy of the lab and preread the instructions.

3/13

Objective:  SWBAT use Snell's Law to calculate the refraction of a light ray.


Warm Up:  Get out your calculator, pencil and pick up a ruler.  Quiz Time.

3/12

Objective:  SWBAT calculate the magnification of a curved mirror.


Warm Up:  An object is places 12 cm in front of a mirror whose magnification is -5.   What is the focal length of the mirror?

3/9

Objective:  SWBAT calculate the image location and height in a mirror.


Warm Up:  An object is placed 10 cm in front of a concave mirror whose focal length is 8 cm.  Using a ray diagram, determine where the image will form, and its type ,size and orientation.

3/7

Objective:  SWBAT explain how electromagnetic waves propogate and list the types of EM waves.


Warm Up:  Draw a diagram of the EM spectrum and label the 7 types of EM waves.

3/5

Objective:  SWBAT review to tomorrow's test on characteristics of waves and sound.


Warm Up:  A car moving 20 m/s away from you sounds it horn whose true frequency is 950 Hz.  What frequency do you hear?

3/2

Yesterday's Lab will be due next Wed.


Objective:  SWBAT calculate the harmonic frequencies of a wave.


Warm Up:  When all the keys on a flute are depressed the lowest note that it can play is middle C.  If the speed of sound in air is 343 m/s and assuming the flute is a cylindrical tube open at both ends, determine the length of the flue from the mouthpiece to the end of the tube.

2/29

Leaping into waves (sounds like we're at the beach!)


Objective:  SWBAT calculate harmonic frequencies.


Warm Up:  Get out your notes and spread out.  Pop quiz on wave basics.

2/28

Objective:  SWBAT determine the resultant wave that occurs when two waves meet at the same place at the same time.


Warm Up:  A wave traveling 2 m/s hits the shore of the bay once every 1.5 seconds.  The wave is 1 m high.  What is the amplitude, frequency and wavelength of the wave?

2/27

It's Melodious Monday- as we start our unit on Sound


Objective:  SWBAT calculate the frequency, wavelength, and period of a wave


Warm Up:  Pick up one syllabus for the unit.  What is the relationship between frequency and period.  How does this apply to waves?

Blogger doesn't support the school system's version of internet explorer anymore which is why there are no posts for earlier in the week.  BUT, there is always a work around.  I <3 Chrome!


Objective:  SWBAT review for tomorrow's test on magnetism and induction of current.


Warm Up:  Pick up two papers.  One is a reference page for the major equations of this unit.  Get out your magnetism and induction problems.  What is the direction of an induced current in a loop of wire oriented perpendicular to the ground that has a magnetic south pole below it that is moving further below the plane of the wire?

2/17

Objective:  SWBAT use Lenz's Law to determine the direction of the opposing magnetic field produced by an induced current.

Warm Up:  Get ready to take some notes.  Get out your right hand.  Time for some right hand rule practice!

2/16

Objective:  SWBAT build a simple electric motor.

Warm Up:  A wire of length 0.655 m carries a current of 21.0 A.  In the presence of a 0.470 T magnetic field, the wire experiences a force of 5.46 N.  What is the angle (less than 90 degrees) between the wire and the magnetic field?

2/15

Objective:  SWBAT determine the strength and direction of magnetic forces and fields due to current carrying wires.

Warm Up:  Get out your magnetism problems workshhet.
An electric power line carries a current of 1400 Ain a location where the Earth's magnetic field is 5.0 x 10^-5T.  The line makes an angle of 75 degrees with respect to the field.  Determine the magnitude of the magnetic force on a 120 m length of line.

2/14

Hey, for Valentine's Day, take the day off.  It's my gift to you ;-)

But if you are bored (and finished with your Magnetism problems) check out the physics of flying cupid pigs in Angry Birds.  http://www.wired.com/wiredscience/2011/02/angry-birds-and-the-valentines-pendulum/

2/13

Objective:  SWBAT determine the effect of a light bulb blowing out on the equivalent resistance of the circuit, as well as the current and voltage drop of the remaining light bulbs.

Warm Up:  Pick up two papers.  Find Req and I tot for the circuit on the board.  Then find V and I for each resistor.

2/10

Objective:  SWBAT determine the direction of the force that is the result of a magnetic field.

Warm Up:  A current carrying wire is carrying current upward.  What is the direction of the force south of the wire?  To the east of the wire?

2/9

Objective:  SWBAT map the fields of several different types of magnets using a compass.

Warm Up:  An alpha particle is moving in the +x direction when it encounters a magnetic field oriented into the floor.  What direction will the alpha particle feel the resulting magnetic force?  What will be the direction of the alpha particle's acceleration?

2/8

Objective:  SWBAT map the magnetic field around a magnet.

Warm Up:  A wire coil in a spaker has a diameter of 0.025m and contains 55 turns of wire.  It is placed in a 0.1 T magnetic field that is perpendicular to the wire.  The current in the wire is 2.0 A.  Determine the magnetic force that acts on the coil.

2/7

Objective:  SWBAT calculate the magnetic force on a charge and determine the direction of the force using the right hand rule.

Warm Up:  A proton is moving from left to right in the classroom and encounters a magnetic field directed from the front to the back of the classroom.  What direction will the magnetic force be on the proton?  What direction is the force if the particle were an electron instead of a proton?

2/6

Anyone who missed Friday's test needs to come in Tuesday A lunch to make it up.

Warm Up:  Did you pick up a Ch 20 and Ch 21 syllabus Friday?
Turn in your Ch 21 Outline.  Pick up one handout.
List the 4 fundamental forces of the Universe.  Of them, which is the weakest force?

2/2

Will Phil see his shadow.....

Objective:  SWBAT review for tomorrow's test on current and circuits.

Warm Up:  Turn in your homework now.  Class is meeting in Mr. Scopel's room so that they can use ours to do a lab.  AFTER the pledge and announcements, pick up your stuff and quietly move to his room.

1/31

Objective:  SWBAT build and test circuits in series and in parallel.

Warm Up:  Pick up a lab packet.  Silently pre-read the lab and make a list of the materials you will need.

1/30

Objective:  SWBAT build virtual circuits and test them for current and voltage.

Warm Up:  Pick up one handout.  Get into a group of three and choose a computer to work on.

1/27

Objective:  SWBAT calculate equivalent resistance, current and voltage drop in a parallel circuit.


Warm Up:  Diagram a circuit that contains a 12 V battery, a 3ohm resistor, a 5 ohm resistor, a light bulb with 1 ohm of resistance and a closed switch.  Calculate the equivalent resistance and total current of the ciruit, as well as the current and voltage drop through each "resistor" (including the light bulb).

1/26

Objective:  SWBAT diagram a circuit as well as calculate the equivilent resistance, current and voltage within the circuit.

Warm Up:  With one partner and using one battery, one wire, and one light bulb ONLY, arrange your circuit so that the light bulb is lit.

1/24

It's Tremendous Tuesday-  brace yourselves for the peak of a solar storm due to hit us during class!

Objective:  SWBAT review for tomorrow's test of Electrostatics and Electrical Energy.

Warm Up:  I wanna give a shout out to the sun for providing us with an excellent event to discuss electromagnitism!  What happens during a solar flare and why are scientists and cummunications managers so interested in them?

http://www.youtube.com/watch?v=72O5LWkywuM&feature=player_embedded

1/23

Objective:  SWBAT practice solving problems involving static electricity

Warm Up:  Determine the electric field 0.2 m away from an isolated charge of 15 uC using a test charge of 0.8 uC.

1/20

Objective:  SWBAT understand the force on a point charge in an electrical field and the energy associated with its position in the field.

Warm Up:  Write an equation for the total energy an object can have that includes terms for each of the types of energy that we have studied.

1/18

Objective:  SWBAT infer data about point charges based on the fields that they generate.

Warm UP:  On a computer, go to http://www.cco.caltech.edu/~phys1/java/phys1/EField/EField.html
Read the directions on how to use the Electric Field Applet.  Place two point charges on your screen where the one on the left is a negative charge and the one on the right is a positive charge.  What do you see?  Change the one on the left to a positive charge of the same magnitude as it was previously and leave the charge on the right alone.  Now what do you see?  Why so these two situations produce different electrical fields?

1/17

Objective:  SWBAT understand how charges and their electrical fields interact.

Warm Up:  Turn in your Ch 18 and Ch 19 Outlines.
Who was Coulomb and why is there a law named after him?

1/12

Day day of the semester!!!  The grade for the test you took yesterday will go on 3rd Quarter.

Objective:  SWBAT experiementally explore changes in phase by making ice cream.

Warm Up:  Read the icecream recipe.  Why is salt added to the ice that is used to freeze the icecream?

1/10

Objective:  SWBAT review for tomorrow's test on Heat and Thermodynamics.

Warm Up:  An automobile engine has an efficiency of 22% and produces 2510 J of work.  How much heat is rejected by the engine?

1/9

Objective:  SWBAT solve problems related to the work done by thermodynamic processes.

Warm Up:  A system gains 1500 J of heat from its surrounding and 2200 J of work is done by the system on the surroundings.  Determine the change in the internal energy of the system.

1/5

Objective:  SWBAT determine the efficiency of a heat engine.

Warm Up:  Yesterday was a commuters nightmare in DC because the cold weather cracked some of the rails on one of the metrorail lines.  Calculate the thermal contraction of a 20 m long steel metrorail line (whose coefficient of thermal expansion is 12 x 10^6) if the temperature drops from 32 oF to 12 oF.

1/4

Objective:  SWBAT understand how thermodynamic processes and work done on/by a gas affect the gases internal energy.

Warm Up:  Air is primarily made up of nitrogen and oxygen gas.  Assume that each behaves as an ideal gas. Determine the rms speed of the nitrogen and oxygen molecules when the temperature of the air is 293 K.

1/3

Happy 2012!!

Objective:  SWBAT understand phase diagrams.

Warm Up:  The Rosser Reeves ruby is 138 carats and is composed of mainly aluminum oxide.  One carat is equivalent to a mass of 0,2 g.  Determine the number of aluminum oxide molecules in the ruby.