Electric Field

We'll be using this trainer / graphic organizer for the next two weeks. I posted the copy here. There is homework in the trainer. I will be collecting them on test day. You may correct them as we learn more and more. If you have any questions, email us!!! It is important that we get through this unit in a timely manner so we can review for the final exam!!!

Coloumb's Law

Today we covered Coloumb's Law. You have homework on this as well. The homework is due on Wednesday (Thursday for Freshman). This chart will help you with unit conversions:

Also remember the formula and the constants. They are on the homework worksheet.

AP Review Packet By Request

Kethly requested the packet for this unit and here it is!

Electroscope Lab

On Thursday and Friday we will be doing a Lab (click there for the text of the lab). It is important to view the lab beforehand to be ready for it. For homework tonight, I would like you to answer the following questions while looking at the laboratory procedures:

Write at least one paragraph (three sentences) foe each question. It must be typed.

1. How is this lab going to help my understanding of electric charge?
2. What do I think will happen in each case?

Just to remind you how much fun lab can be:

Juniors, Seniors, and AP... Homework

APers...

Read the instructions here.


You will be using excel to calculate optics equations through a simulator. The simulator can be found here and the excel document can be found here.

Juniors...

Define the following for Friday:

• Atom
• Ion
• Conductor
• Insulator
• Electron
• Charge

Remember that your take home exam / egg drop is due Friday!!!

Egg Drop Update

There is homework for the next class:

Here are the instructions for what we did today:

REMEMBER TO BRING IN YOUR MATERIALS!!!!

Homework for Wednesday!!!

Here is the homework due on Wednesday!!!

Bring a list of 5 items you may need for an egg drop!!!

Do this problem:
A 10,000 kilogram train is traveling at 30 meters per second when a 200 kilogram rock is dropped onto one of the cars. How fast is the train moving after the rock is on it?

Momentum and Impulse

The homework for over the weekend is to watch these two YouTube videos:

Momentum

Today we are starting a new unit. I would like to try something new. I would like you, for homework, to view these YouTube clips from the Khan Academy:

Energy Homework

The homework can be located here.

I included some examples of open-ended questions.

Potential and Kinetic Energy

Here's the homework for today. This is due on Wednesday. There are no exceptions. Please do this on a separate sheet of paper. The questions are as follows:

1. 1. How much kinetic energy does a 4 Kg cat have while running at 9 m/s?
2. 2. What is the mass of an object moving with a speed of 4 m/s and a kinetic energy of 2000 J?
3. 3. A 400 Kg car has 1.8 x 10⁵ J of kinetic energy. How fast is it moving?
4. 4. How fast is a 3 Kg toy car with 20 J of kinetic energy moving?
5. 5. A student runs to physics class with a speed of 6 m/s. If the student has 880 J of kinetic energy, what is her mass?
6. 6. What is the speed of a 1200 kg car moving with a kinetic energy of 15 kJ

Energy Poster

A few of you said that the poster was helpful, so I've decided to post it up here.

Scientific Notation For Juniors and Freshman

For the next unit, you will need to know scientific notation. I have included a chapter from Physics Demystified for your reading pleasure. There are questions at the end of this chapter that will be assigned.

THE QUESTIONS ARE 6-9 ON PAGE 48!!! THEY ARE DUE FRIDAY FOR THE FRESHMAN AND MONDAY FOR THE JUNIORS!!!

IT'S FOUR MULTIPLE CHOICE QUESTIONS ON SCIENTIFIC NOTATION.

CLICK HERE FOR THE CHAPTER AND THE HOMEWORK

Here is the Khan Academy Video on Scientific Notation:

Here is the Khan Academy Video with Examples:

Junior Homework

Just a reminder:

THE LAST DAY TO MAKE UP ANYTHING IS THIS TUESDAY!!!

There is also a homework that is due on Tuesday. IT MUST BE IN TUESDAY!!!

Here's a link to it in case you weren't in or lost the sheet.

Tuesday, January 10th, 2012

Hey Ya'll.

Freshman Physics... Look over the "practice problems" worksheet Mr. Kolb gave out at the end of class today.  Do your best to complete it.  Remember that all retakes and make-ups must be completed by the latest Tuesday January 24th.  Your midterm will be on Monday January 30th.

AP... Linksssssssss! Magnetism Presentation (*.pdf), Magnetism Practice Problems, Magnet and Compass Simulation

The following is a video from Khan Academy talking about how we understand centripetal acceleration. Remember: Acceleration is a Change in Velocity. Velocity has magnitude and direction.

The following is a video we watched in class. It is important to understand why these demonstrations happen:

The solution to the classwork can be found here.

Uniform Circular Motion!!!

This week we are covering uniform circular motion. I will be handing out a worksheet here to use with the simulation below.

Click to Run

Some questions you should keep in mind are as follows:

What is the angular velocity of the ladybug?

What is the Linear / Tangential Velocity of the ladybug?

What is the acceleration of the ladybug?

You should also read this handout by clicking here. Pay close attention to the "Real-Life Applications" section.

The solutions for our classwork problem can be found here.