4/29 Physics Recording - Light and Lenses

https://youtu.be/xk_P7x3vjds

Physics Quizzes

Hi folks,

Here are the quizzes for the year.

4/29 Physics update and homework due 5/6

Hi folks,

Today we took a bit of a deeper look into light and began our unit on optics.  We will do more with optics next week.

For homework this week…I've changed my mind.  :)

Remember that extra credit assignment I was talking about in class, well let's make it homework with extra credit possibilities.  

Here's the scoop.  Take a look at this article by Randal Monroe from his What If blog.   https://what-if.xkcd.com/3/  You'll see how he uses different physics concepts and applies them to real world things even though the situation is fictional.  (Unless somewhere out there Yoda really is hanging out on some swamp planet…it's possible.)  

Now you do it.  Pick any book, movie, comic or video game and apply some of the things we've learned this year.  I've included one of my ex-students papers for example.  It's very good be sure to take a look.

For homework,

Apply at least 5 different physics concepts to the situation.  Tell me how different physics concepts can apply to your situation.  A small list of some possibilities would be: gravity, mass, velocity, acceleration, force, impulse, momentum, any of Newton's laws, energy, power, and energy efficiency.   For example, in the Xena paper he used gravity, Newton's second law, acceleration,  resultant velocity,  energy and power.  

For extra credit,

Math it up!  I'll give you 2 points of extra credit (max of 10 points) for every formula you apply to the situation.  The Xena example includes 6 different formulas. 

Have fun folks!  I can't wait to see what you come up with.

4/22 Physics Recording - Sound

https://youtu.be/ynhkaAAscoo

4/22 Physics update and homework due 4/29

Hi folks, 

Today we covered several different concepts regarding waves and sound.

Homework due next week:

We haven't covered this material in class yet but it will let us get a bit of a jump on the next "unit".

Read pgs. 404 - 418 

Do Review Questions #'s 1- 23 on page 419 and 420

Little bit of outside time for physics today

Hi folks,

We are going to spend a little bit of time outside today during class so you may want to be prepared for a bit of somewhat chilly weather.

Best,

Jim Mueller

(919) 907-3217

4/15 Physics recording - Wrapping up Waves

https://youtu.be/XEpMQob8WbU

4/15 Physics update and homework due 4/22

Hi folks,

Today we took time to learn about natural frequency and resonance as well as a few more bits and pieces regarding waves and how they transfer energy. 

Homework for next week is to:

Read the Sound chapter in the book. Pages 390 to 400 (We've been talking on and off about sound this entire unit. This chapter will help to solidify a lot of the concepts we've already been discussing.)

Do Review Questions on page 401 #'s 1 - 20.

Best,

Jim Mueller

(919) 907-3217

Link to the Slinky Interactive pdf

 Here is the .PDF that goes along with the Slinky Interactive.  The activity and PDF used to be on the same page but they seem to have changed that.  

https://www.physicsclassroom.com/Physics-Interactives/Waves-and-Sound/Slinky-Lab/Slinky-Lab-Exercise

Best,

Jim Mueller

(919) 907-3217

Link for the Slinky Lab

Hi folks,

I changed the link for the Slinky Lab before sending the email but apparently it didn't work.  Here's the link again.

https://www.physicsclassroom.com/Physics-Interactives/Waves-and-Sound/Slinky-Lab

Best,

Jim Mueller

(919) 907-3217

4/8/19 Physics Class Recording - More Waves

https://youtu.be/SCGDKo1B0Y8

4/8 Physics update and homework due 4/15

Hi folks,

Today in physics we got spent more time with waves and got the chance to really see the relationships between velocity, frequency and amplitude of a wave.

For homework this week:

Navigate to this page http://www.physicsclassroom.com/class/waves and read each of the sections indicated below.

Do all the questions on each one of the pages.

Use Slinky Lab Interactive to do the .pdf that accompanies the activity.

This may work better on some browsers than on others.  I find it works quite well with Google Chrome.  Does not seem to work with FireFox.

Vibrational Motion

Properties of Periodic Motion

Waves and wavelike motion

What is a wave?

Categories of Waves

Anatomy of a Wave

Frequency and Period of a Wave

Energy Transport and Amplitude of a Wave

Speed of a Wave

The Wave Equation

4/1 Physics Class Recording - Intro to waves

https://youtu.be/CZQSY4feSoE

4/1 Physics update and homework due 4/8

Hi folks,

Today we moved forward in our energy block by getting to know some of the terms used to describe waves and wave motion. We will be doing more with this next week.

Homework for this week is to:

Read pp. 372 - 379 in the Conceptual Physics book

Do Review Questions pg. 387 #'s 1 - 11

Do Plug and Chug 1-5

Extra credit possibility - look online to find the formula for the relationship between the frequency of a pendulum and the length of string. Using the formula, calculate the length of string necessary to create a pendulum with a 1.5 Hz frequency. Test your result at home find out if your prediction is right. Hand in your prediction, your result and your percentage error for extra credit.